C++ LeetCode Typing Practice

1798 LeetCode solutions in C++. Pick one to type it and see your WPM and accuracy.

01 Matrix · 35 lines
132 Pattern · 24 lines
1-bit and 2-bit Characters · 19 lines
24 Game · 34 lines
2 Keys Keyboard · 38 lines
3Sum · 31 lines
3Sum Closest · 22 lines
3Sum With Multiplicity · 64 lines
4Sum · 88 lines
4Sum II · 36 lines
Abbreviating the Product of a Range · 72 lines
Accounts Merge · 64 lines
Add Binary · 22 lines
Add Digits · 6 lines
Adding Spaces to a String · 25 lines
Adding Two Negabinary Numbers · 32 lines
Additive Number · 41 lines
Add Minimum Number of Rungs · 38 lines
Add One Row to Tree · 22 lines
Add Strings · 29 lines
Add to Array-Form of Integer · 49 lines
Add Two Integers · 6 lines
Add Two Numbers · 26 lines
Add Two Numbers II · 43 lines
Advantage Shuffle · 34 lines
Airplane Seat Assignment Probability · 7 lines
Alert Using Same Key-Card Three or More Times in a One Hour Period · 37 lines
All Ancestors of a Node in a Directed Acyclic Graph · 23 lines
All Divisions With the Highest Score of a Binary Array · 25 lines
All Elements in Two Binary Search Trees · 18 lines
All Nodes Distance K in Binary Tree · 85 lines
Allocate Mailboxes · 28 lines
All O`one Data Structure · 43 lines
All Paths From Source to Target · 26 lines
All Possible Full Binary Trees · 35 lines
Alphabet Board Path · 35 lines
Ambiguous Coordinates · 47 lines
Angle Between Hands of a Clock · 10 lines
A Number After a Double Reversal · 6 lines
Append K Integers With Minimal Sum · 56 lines
Apply Discount Every n Orders · 32 lines
Apply Discount to Prices · 31 lines
Arithmetic Slices · 19 lines
Arithmetic Slices II - Subsequence · 18 lines
Arithmetic Subarrays · 52 lines
Arranging Coins · 20 lines
Array Nesting · 18 lines
Array of Doubled Pairs · 53 lines
Array Partition · 11 lines
Array With Elements Not Equal to Average of Neighbors · 39 lines
As Far from Land as Possible · 42 lines
Assign Cookies · 20 lines
Asteroid Collision · 46 lines
Available Captures for Rook · 45 lines
Average of Levels in Binary Tree · 20 lines
Average Salary Excluding the Minimum and Maximum Salary · 12 lines
Avoid Flood in The City · 30 lines
Backspace String Compare · 40 lines
Bag of Tokens · 19 lines
Balance a Binary Search Tree · 27 lines
Balanced Binary Tree · 26 lines
Base 7 · 28 lines
Baseball Game · 28 lines
Basic Calculator · 39 lines
Basic Calculator II · 64 lines
Battleships in a Board · 101 lines
Beautiful Arrangement · 34 lines
Beautiful Arrangement II · 34 lines
Beautiful Array · 25 lines
Best Poker Hand · 17 lines
Best Position for a Service Centre · 51 lines
Best Sightseeing Pair · 13 lines
Best Team With No Conflicts · 25 lines
Best Time to Buy and Sell Stock · 19 lines
Best Time to Buy and Sell Stock II · 15 lines
Best Time to Buy and Sell Stock III · 27 lines
Best Time to Buy and Sell Stock IV · 17 lines
Best Time to Buy and Sell Stock with Cooldown · 17 lines
Best Time to Buy and Sell Stock with Transaction Fee · 14 lines
Binary Gap · 24 lines
Binary Number with Alternating Bits · 7 lines
Binary Prefix Divisible By 5 · 24 lines
Binary Search · 14 lines
Binary Search Tree Iterator · 36 lines
Binary Search Tree to Greater Sum Tree · 21 lines
Binary String With Substrings Representing 1 To N · 16 lines
Binary Subarrays With Sum · 31 lines
Binary Tree Cameras · 54 lines
Binary Tree Coloring Game · 47 lines
Binary Tree Inorder Traversal · 18 lines
Binary Tree Level Order Traversal · 31 lines
Binary Tree Level Order Traversal II · 24 lines
Binary Tree Maximum Path Sum · 21 lines
Binary Tree Paths · 26 lines
Binary Tree Postorder Traversal · 15 lines
Binary Tree Preorder Traversal · 15 lines
Binary Tree Pruning · 10 lines
Binary Tree Right Side View · 37 lines
Binary Trees With Factors · 30 lines
Binary Tree Tilt · 47 lines
Binary Tree Zigzag Level Order Traversal · 31 lines
Binary Watch · 91 lines
Bitwise AND of Numbers Range · 16 lines
Bitwise ORs of Subarrays · 15 lines
Boats to Save People · 28 lines
Booking Concert Tickets in Groups · 156 lines
Brace Expansion II · 69 lines
Break a Palindrome · 26 lines
Bricks Falling When Hit · 95 lines
Brick Wall · 31 lines
Broken Calculator · 15 lines
Buddy Strings · 37 lines
Build an Array With Stack Operations · 21 lines
Build Array from Permutation · 11 lines
Build Array Where You Can Find The Maximum Exactly K Comparisons · 17 lines
Building Boxes · 41 lines
Bulb Switcher · 6 lines
Bulb Switcher II · 11 lines
Bulls and Cows · 21 lines
Burst Balloons · 42 lines
Bus Routes · 46 lines
Calculate Amount Paid in Taxes · 17 lines
Calculate Digit Sum of a String · 24 lines
Calculate Money in Leetcode Bank · 11 lines
Camelcase Matching · 32 lines
Can Convert String in K Moves · 20 lines
Candy · 15 lines
Can I Win · 30 lines
Can Make Arithmetic Progression From Sequence · 13 lines
Can Make Palindrome from Substring · 29 lines
Can Place Flowers · 17 lines
Can You Eat Your Favorite Candy on Your Favorite Day? · 30 lines
Capacity To Ship Packages Within D Days · 66 lines
Capitalize the Title · 27 lines
Card Flipping Game · 20 lines
Car Fleet · 32 lines
Car Fleet II · 26 lines
Car Pooling · 21 lines
Cat and Mouse · 99 lines
Cat and Mouse II · 82 lines
Cells in a Range on an Excel Sheet · 16 lines
Cells with Odd Values in a Matrix · 26 lines
Chalkboard XOR Game · 8 lines
Champagne Tower · 28 lines
Change Minimum Characters to Satisfy One of Three Conditions · 25 lines
Cheapest Flights Within K Stops · 28 lines
Check Array Formation Through Concatenation · 13 lines
Check Completeness of a Binary Tree · 30 lines
Check If All 1's Are at Least Length K Places Away · 19 lines
Check if All A's Appears Before All B's · 11 lines
Check if All Characters Have Equal Number of Occurrences · 11 lines
Check if All the Integers in a Range Are Covered · 24 lines
Check if an Original String Exists Given Two Encoded Strings · 46 lines
Check if a Parentheses String Can Be Valid · 52 lines
Check if Array Is Sorted and Rotated · 10 lines
Check If Array Pairs Are Divisible by k · 22 lines
Check If a String Can Break Another String · 28 lines
Check If a String Contains All Binary Codes of Size K · 32 lines
Check If a Word Occurs As a Prefix of Any Word in a Sentence · 13 lines
Check if Binary String Has at Most One Segment of Ones · 11 lines
Check if Every Row and Column Contains All Numbers · 22 lines
Check If It Is a Good Array · 10 lines
Check If It Is a Straight Line · 13 lines
Check if Matrix Is X-Matrix · 16 lines
Check if Move is Legal · 25 lines
Check If N and Its Double Exist · 28 lines
Check if Number Has Equal Digit Count and Digit Value · 23 lines
Check if Number is a Sum of Powers of Three · 11 lines
Check if Numbers Are Ascending in a Sentence · 21 lines
Check if One String Swap Can Make Strings Equal · 31 lines
Check If String Is a Prefix of Array · 16 lines
Check If String Is Transformable With Substring Sort Operations · 23 lines
Check if There Is a Valid Parentheses String Path · 37 lines
Check if There is a Valid Partition For The Array · 22 lines
Check if There is a Valid Path in a Grid · 57 lines
Check if the Sentence Is Pangram · 10 lines
Check If Two String Arrays are Equivalent · 35 lines
Check if Word Can Be Placed In Crossword · 37 lines
Check if Word Equals Summation of Two Words · 13 lines
Check If Word Is Valid After Substitutions · 23 lines
Checking Existence of Edge Length Limited Paths · 53 lines
Check Whether Two Strings are Almost Equivalent · 18 lines
Cherry Pickup · 61 lines
Cherry Pickup II · 41 lines
Cinema Seat Allocation · 46 lines
Circle and Rectangle Overlapping · 12 lines
Circular Array Loop · 36 lines
Circular Permutation in Binary Representation · 50 lines
Climbing Stairs · 13 lines
Clone Graph · 27 lines
Closest Dessert Cost · 70 lines
Closest Divisors · 16 lines
Closest Room · 23 lines
Closest Subsequence Sum · 54 lines
Clumsy Factorial · 26 lines
Coin Change · 1 lines
Coin Change 2 · 18 lines
Coloring A Border · 53 lines
Combinations · 23 lines
Combination Sum · 30 lines
Combination Sum II · 25 lines
Combination Sum III · 31 lines
Combination Sum IV · 15 lines
Compare Strings by Frequency of the Smallest Character · 25 lines
Compare Version Numbers · 42 lines
Complement of Base 10 Integer · 10 lines
Complete Binary Tree Inserter · 56 lines
Complex Number Multiplication · 19 lines
Concatenated Words · 25 lines
Concatenation of Array · 10 lines
Concatenation of Consecutive Binary Numbers · 16 lines
Consecutive Characters · 13 lines
Consecutive Numbers Sum · 12 lines
Constrained Subsequence Sum · 17 lines
Construct Binary Search Tree from Preorder Traversal · 26 lines
Construct Binary Tree from Inorder and Postorder Traversal · 20 lines
Construct Binary Tree from Preorder and Inorder Traversal · 38 lines
Construct Binary Tree from Preorder and Postorder Traversal · 47 lines
Construct K Palindrome Strings · 15 lines
Construct Quad Tree · 46 lines
Construct String from Binary Tree · 26 lines
Construct Target Array With Multiple Sums · 41 lines
Construct the Lexicographically Largest Valid Sequence · 39 lines
Construct the Rectangle · 11 lines
Container With Most Water · 32 lines
Contains Duplicate · 11 lines
Contains Duplicate II · 11 lines
Contains Duplicate III · 29 lines
Contiguous Array · 19 lines
Continuous Subarray Sum · 17 lines
Convert 1D Array Into 2D Array · 12 lines
Convert a Number to Hexadecimal · 16 lines
Convert Binary Number in a Linked List to Integer · 19 lines
Convert BST to Greater Tree · 14 lines
Convert Integer to the Sum of Two No-Zero Integers · 18 lines
Convert Sorted Array to Binary Search Tree · 26 lines
Convert Sorted List to Binary Search Tree · 20 lines
Convert to Base -2 · 17 lines
Coordinate With Maximum Network Quality · 33 lines
Copy List with Random Pointer · 40 lines
Corporate Flight Bookings · 15 lines
Count All Possible Routes · 19 lines
Count All Valid Pickup and Delivery Options · 13 lines
Count and Say · 27 lines
Count Array Pairs Divisible by K · 16 lines
Count Artifacts That Can Be Extracted · 32 lines
Count Asterisks · 22 lines
Count Binary Substrings · 21 lines
Count Common Words With One Occurrence · 12 lines
Count Complete Tree Nodes · 11 lines
Count Different Palindromic Subsequences · 30 lines
Count Elements With Strictly Smaller and Greater Elements · 12 lines
Count Equal and Divisible Pairs in an Array · 13 lines
Count Fertile Pyramids in a Land · 30 lines
Count Good Meals · 18 lines
Count Good Nodes in Binary Tree · 21 lines
Count Good Numbers · 38 lines
Count Good Triplets · 15 lines
Count Good Triplets in an Array · 36 lines
Count Hills and Valleys in an Array · 22 lines
Counting Bits · 21 lines
Counting Words With a Given Prefix · 18 lines
Count Integers in Intervals · 32 lines
Count Integers With Even Digit Sum · 11 lines
Count Items Matching a Rule · 16 lines
Count Largest Group · 32 lines
Count Lattice Points Inside a Circle · 22 lines
Count Negative Numbers in a Sorted Matrix · 10 lines
Count Nice Pairs in an Array · 34 lines
Count Nodes Equal to Average of Subtree · 16 lines
Count Nodes With the Highest Score · 60 lines
Count Number of Bad Pairs · 22 lines
Count Number of Homogenous Substrings · 15 lines
Count Number of Maximum Bitwise-OR Subsets · 29 lines
Count Number of Nice Subarrays · 26 lines
Count Number of Pairs With Absolute Difference K · 14 lines
Count Number of Rectangles Containing Each Point · 25 lines
Count Number of Special Subsequences · 16 lines
Count Number of Teams · 25 lines
Count Number of Texts · 18 lines
Count Number of Ways to Place Houses · 15 lines
Count Numbers with Unique Digits · 45 lines
Count Odd Numbers in an Interval Range · 10 lines
Count of Matches in Tournament · 18 lines
Count of Range Sum · 70 lines
Count of Smaller Numbers After Self · 40 lines
Count Operations to Obtain Zero · 11 lines
Count Pairs Of Nodes · 61 lines
Count Pairs With XOR in a Range · 79 lines
Count Prefixes of a Given String · 16 lines
Count Primes · 19 lines
Count Servers that Communicate · 29 lines
Count Sorted Vowel Strings · 35 lines
Count Special Quadruplets · 22 lines
Count Square Submatrices with All Ones · 42 lines
Count Square Sum Triples · 16 lines
Count Subarrays With Score Less Than K · 36 lines
Count Sub Islands · 52 lines
Count Submatrices With All Ones · 29 lines
Count Substrings That Differ by One Character · 23 lines
Count Subtrees With Max Distance Between Cities · 54 lines
Count the Hidden Sequences · 20 lines
Count the Number of Consistent Strings · 20 lines
Count the Number of Ideal Arrays · 21 lines
Count The Repetitions · 36 lines
Count Triplets That Can Form Two Arrays of Equal XOR · 49 lines
Count Unguarded Cells in the Grid · 48 lines
Count Unhappy Friends · 30 lines
Count Unique Characters of All Substrings of a Given String · 30 lines
Count Unreachable Pairs of Nodes in an Undirected Graph · 29 lines
Count Vowels Permutation · 19 lines
Count Vowel Substrings of a String · 32 lines
Count Ways to Build Rooms in an Ant Colony · 35 lines
Count Ways to Make Array With Product · 48 lines
Count Words Obtained After Adding a Letter · 37 lines
Couples Holding Hands · 26 lines
Course Schedule · 28 lines
Course Schedule II · 29 lines
Course Schedule III · 22 lines
Course Schedule IV · 44 lines
Cousins in Binary Tree · 42 lines
Cracking the Safe · 32 lines
Crawler Log Folder · 52 lines
Create Binary Tree From Descriptions · 30 lines
Create Maximum Number · 55 lines
Create Sorted Array through Instructions · 79 lines
Create Target Array in the Given Order · 12 lines
Critical Connections in a Network · 32 lines
Custom Sort String · 24 lines
Cut Off Trees for Golf Event · 96 lines
Cyclically Rotating a Grid · 70 lines
Daily Temperatures · 16 lines
Data Stream as Disjoint Intervals · 32 lines
Day of the Week · 32 lines
Day of the Year · 39 lines
Decoded String at Index · 33 lines
Decode String · 40 lines
Decode the Message · 29 lines
Decode the Slanted Ciphertext · 43 lines
Decode Ways · 43 lines
Decode Ways II · 64 lines
Decode XORed Array · 8 lines
Decode XORed Permutation · 19 lines
Decompress Run-Length Encoded List · 17 lines
Decrease Elements To Make Array Zigzag · 34 lines
Decrypt String from Alphabet to Integer Mapping · 17 lines
Deepest Leaves Sum · 24 lines
Defanging an IP Address · 15 lines
Defuse the Bomb · 31 lines
Degree of an Array · 19 lines
Delete and Earn · 23 lines
Delete Characters to Make Fancy String · 19 lines
Delete Columns to Make Sorted · 17 lines
Delete Columns to Make Sorted II · 42 lines
Delete Columns to Make Sorted III · 23 lines
Delete Duplicate Folders in System · 55 lines
Delete Leaves With a Given Value · 28 lines
Delete Node in a BST · 24 lines
Delete Node in a Linked List · 20 lines
Delete Nodes And Return Forest · 45 lines
Delete Operation for Two Strings · 25 lines
Delete the Middle Node of a Linked List · 21 lines
Delivering Boxes from Storage to Ports · 61 lines
Describe the Painting · 21 lines
Design Add and Search Words Data Structure · 69 lines
Design a Food Rating System · 22 lines
Design an ATM Machine · 17 lines
Design an Ordered Stream · 22 lines
Design a Number Container System · 32 lines
Design a Stack With Increment Operation · 37 lines
Design a Text Editor · 63 lines
Design Authentication Manager · 28 lines
Design Bitset · 49 lines
Design Browser History · 41 lines
Design Circular Deque · 70 lines
Design Circular Queue · 83 lines
Design Front Middle Back Queue · 100 lines
Design HashMap · 57 lines
Design HashSet · 24 lines
Design Linked List · 73 lines
Design Movie Rental System · 107 lines
Design Parking System · 12 lines
Design Skiplist · 34 lines
Design Twitter · 54 lines
Design Underground System · 40 lines
Destination City · 16 lines
Destroying Asteroids · 15 lines
Detect Capital · 41 lines
Detect Cycles in 2D Grid · 32 lines
Detect Pattern of Length M Repeated K or More Times · 22 lines
Detect Squares · 42 lines
Determine Color of a Chessboard Square · 6 lines
Determine if String Halves Are Alike · 14 lines
Determine if Two Strings Are Close · 23 lines
Determine Whether Matrix Can Be Obtained By Rotation · 26 lines
Detonate the Maximum Bombs · 47 lines
Diagonal Traverse · 65 lines
Diagonal Traverse II · 26 lines
Diameter of Binary Tree · 19 lines
Dice Roll Simulation · 25 lines
Different Ways to Add Parentheses · 44 lines
Dinner Plate Stacks · 45 lines
Display Table of Food Orders in a Restaurant · 52 lines
Distance Between Bus Stops · 25 lines
Distant Barcodes · 54 lines
Distinct Echo Substrings · 51 lines
Distinct Subsequences · 19 lines
Distinct Subsequences II · 23 lines
Distribute Candies · 8 lines
Distribute Candies to People · 22 lines
Distribute Coins in Binary Tree · 28 lines
Distribute Repeating Integers · 25 lines
DI String Match · 14 lines
Divide Array in Sets of K Consecutive Numbers · 29 lines
Divide a String Into Groups of Size k · 22 lines
Divide Two Integers · 20 lines
Divisor Game · 7 lines
Domino and Tromino Tiling · 14 lines
Dota2 Senate · 30 lines
Dungeon Game · 35 lines
Duplicate Zeros · 12 lines
Earliest Possible Day of Full Bloom · 20 lines
Edit Distance · 23 lines
Egg Drop With 2 Eggs and N Floors · 30 lines
Element Appearing More Than 25% In Sorted Array · 17 lines
Eliminate Maximum Number of Monsters · 12 lines
Elimination Game · 16 lines
Employee Importance · 21 lines
Encode and Decode TinyURL · 33 lines
Encrypt and Decrypt Strings · 38 lines
Equal Rational Numbers · 70 lines
Equal Row and Column Pairs · 20 lines
Equal Sum Arrays With Minimum Number of Operations · 62 lines
Erect the Fence · 50 lines
Escape a Large Maze · 38 lines
Escape The Ghosts · 14 lines
Escape the Spreading Fire · 110 lines
Evaluate Boolean Binary Tree · 8 lines
Evaluate Division · 62 lines
Evaluate Reverse Polish Notation · 57 lines
Evaluate the Bracket Pairs of a String · 34 lines
Even Odd Tree · 37 lines
Exam Room · 59 lines
Excel Sheet Column Number · 15 lines
Excel Sheet Column Title · 12 lines
Exclusive Time of Functions · 21 lines
Execution of All Suffix Instructions Staying in a Grid · 40 lines
Expression Add Operators · 36 lines
Expressive Words · 57 lines
Factorial Trailing Zeroes · 18 lines
Fair Candy Swap · 42 lines
Fair Distribution of Cookies · 27 lines
Falling Squares · 24 lines
Fancy Sequence · 43 lines
Fibonacci Number · 7 lines
Filling Bookcase Shelves · 30 lines
Filter Restaurants by Vegan-Friendly, Price and Distance · 35 lines
Final Prices With a Special Discount in a Shop · 16 lines
Final Value of Variable After Performing Operations · 11 lines
Find a Corresponding Node of a Binary Tree in a Clone of That Tree · 12 lines
Find All Anagrams in a String · 33 lines
Find All Duplicates in an Array · 14 lines
Find All Good Strings · 78 lines
Find All Groups of Farmland · 40 lines
Find All K-Distant Indices in an Array · 16 lines
Find All Lonely Numbers in the Array · 17 lines
Find All Numbers Disappeared in an Array · 16 lines
Find All People With Secret · 55 lines
Find All Possible Recipes from Given Supplies · 42 lines
Find And Replace in String · 21 lines
Find and Replace Pattern · 51 lines
Find a Peak Element II · 33 lines
Find Array Given Subset Sums · 31 lines
Find a Value of a Mysterious Function Closest to Target · 15 lines
Find Bottom Left Tree Value · 22 lines
Find Center of Star Graph · 23 lines
Find Closest Node to Given Two Nodes · 44 lines
Find Closest Number to Zero · 17 lines
Find Common Characters · 26 lines
Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree · 105 lines
Find Duplicate File in System · 45 lines
Find Duplicate Subtrees · 23 lines
Find Elements in a Contaminated Binary Tree · 36 lines
Find Eventual Safe States · 31 lines
Find First and Last Position of Element in Sorted Array · 58 lines
Find First Palindromic String in the Array · 20 lines
Find Good Days to Rob the Bank · 30 lines
Find Greatest Common Divisor of Array · 17 lines
Find if Path Exists in Graph · 27 lines
Finding 3-Digit Even Numbers · 24 lines
Finding MK Average · 118 lines
Finding Pairs With a Certain Sum · 57 lines
Finding the Users Active Minutes · 14 lines
Find in Mountain Array · 97 lines
Find K Closest Elements · 25 lines
Find K Pairs with Smallest Sums · 30 lines
Find Kth Bit in Nth Binary String · 32 lines
Find Kth Largest XOR Coordinate Value · 38 lines
Find K-th Smallest Pair Distance · 31 lines
Find Largest Value in Each Tree Row · 26 lines
Find Latest Group of Size M · 18 lines
Find Longest Awesome Substring · 29 lines
Find Lucky Integer in an Array · 24 lines
Find Median from Data Stream · 20 lines
Find Minimum in Rotated Sorted Array · 21 lines
Find Minimum in Rotated Sorted Array II · 16 lines
Find Minimum Time to Finish All Jobs · 32 lines
Find Missing Observations · 12 lines
Find Mode in Binary Search Tree · 28 lines
Find Nearest Point That Has the Same X or Y Coordinate · 18 lines
Find Numbers with Even Number of Digits · 18 lines
Find N Unique Integers Sum up to Zero · 12 lines
Find Original Array From Doubled Array · 23 lines
Find Palindrome With Fixed Length · 26 lines
Find Peak Element · 10 lines
Find Pivot Index · 16 lines
Find Players With Zero or One Losses · 27 lines
Find Positive Integer Solution for a Given Equation · 41 lines
Find Resultant Array After Removing Anagrams · 16 lines
Find Right Interval · 17 lines
Find Servers That Handled Most Number of Requests · 49 lines
Find Smallest Letter Greater Than Target · 30 lines
Find Subsequence of Length K With the Largest Sum · 20 lines
Find Substring With Given Hash Value · 38 lines
Find Target Indices After Sorting Array · 11 lines
Find the City With the Smallest Number of Neighbors at a Threshold Distance · 42 lines
Find the Closest Palindrome · 30 lines
Find the Difference · 9 lines
Find the Difference of Two Arrays · 19 lines
Find the Distance Value Between Two Arrays · 19 lines
Find the Duplicate Number · 24 lines
Find the Highest Altitude · 14 lines
Find the K-Beauty of a Number · 29 lines
Find the Kth Largest Integer in the Array · 14 lines
Find the Kth Smallest Sum of a Matrix With Sorted Rows · 33 lines
Find the Longest Substring Containing Vowels in Even Counts · 20 lines
Find the Longest Valid Obstacle Course at Each Position · 57 lines
Find the Middle Index in Array · 19 lines
Find the Minimum and Maximum Number of Nodes Between Critical Points · 25 lines
Find the Minimum Number of Fibonacci Numbers Whose Sum Is K · 30 lines
Find the Most Competitive Subsequence · 15 lines
Find the Shortest Superstring · 101 lines
Find the Smallest Divisor Given a Threshold · 22 lines
Find the Student that Will Replace the Chalk · 28 lines
Find the Town Judge · 14 lines
Find the Winner of an Array Game · 17 lines
Find the Winner of the Circular Game · 17 lines
Find Three Consecutive Integers That Sum to a Given Number · 23 lines
Find Triangular Sum of an Array · 12 lines
Find Two Non-overlapping Sub-arrays Each With Target Sum · 43 lines
Find Unique Binary String · 12 lines
Find Valid Matrix Given Row and Column Sums · 23 lines
Find Winner on a Tic Tac Toe Game · 32 lines
Find Words That Can Be Formed by Characters · 31 lines
Find XOR Sum of All Pairs Bitwise AND · 20 lines
First Bad Version · 15 lines
First Day Where You Have Been in All the Rooms · 17 lines
First Letter to Appear Twice · 17 lines
First Missing Positive · 24 lines
First Unique Character in a String · 18 lines
Fizz Buzz · 20 lines
Flatten a Multilevel Doubly Linked List · 29 lines
Flatten Binary Tree to Linked List · 15 lines
Flatten Nested List Iterator · 30 lines
Flip Binary Tree To Match Preorder Traversal · 36 lines
Flip Columns For Maximum Number of Equal Rows · 17 lines
Flip Equivalent Binary Trees · 21 lines
Flipping an Image · 22 lines
Flip String to Monotone Increasing · 44 lines
Flood Fill · 25 lines
Flower Planting With No Adjacent · 38 lines
Form Array by Concatenating Subarrays of Another Array · 45 lines
Form Largest Integer With Digits That Add up to Target · 24 lines
Four Divisors · 31 lines
Fraction Addition and Subtraction · 57 lines
Fraction to Recurring Decimal · 31 lines
Freedom Trail · 21 lines
Frequency of the Most Frequent Element · 31 lines
Friends Of Appropriate Ages · 14 lines
Frog Jump · 45 lines
Frog Position After T Seconds · 60 lines
Fruit Into Baskets · 29 lines
Furthest Building You Can Reach · 40 lines
Game of Life · 70 lines
Gas Station · 23 lines
GCD Sort of an Array · 73 lines
Generate a String With Characters That Have Odd Counts · 13 lines
Generate Parentheses · 29 lines
Generate Random Point in a Circle · 25 lines
Get Biggest Three Rhombus Sums in a Grid · 31 lines
Get Equal Substrings Within Budget · 20 lines
Get Maximum in Generated Array · 20 lines
Get the Maximum Score · 26 lines
Get Watched Videos by Your Friends · 45 lines
Global and Local Inversions · 19 lines
Goal Parser Interpretation · 20 lines
Goat Latin · 31 lines
Graph Connectivity With Threshold · 62 lines
Gray Code · 17 lines
Greatest Common Divisor of Strings · 10 lines
Greatest English Letter in Upper and Lower Case · 26 lines
Greatest Sum Divisible by Three · 26 lines
Grid Game · 20 lines
Grid Illumination · 57 lines
Group Anagrams · 21 lines
Groups of Special-Equivalent Strings · 24 lines
Groups of Strings · 65 lines
Group the People Given the Group Size They Belong To · 20 lines
Grumpy Bookstore Owner · 52 lines
Guess Number Higher or Lower · 25 lines
Guess Number Higher or Lower II · 28 lines
Hamming Distance · 12 lines
Hand of Straights · 23 lines
Happy Number · 31 lines
Heaters · 25 lines
Height Checker · 12 lines
H-Index · 11 lines
H-Index II · 19 lines
House Robber · 15 lines
House Robber II · 57 lines
House Robber III · 17 lines
How Many Numbers Are Smaller Than the Current Number · 16 lines
HTML Entity Parser · 29 lines
Image Overlap · 27 lines
Image Smoother · 22 lines
Implement Magic Dictionary · 48 lines
Implement Queue using Stacks · 53 lines
Implement Rand10() Using Rand7() · 13 lines
Implement Stack using Queues · 33 lines
Implement strStr() · 6 lines
Implement Trie (Prefix Tree) · 74 lines
Increasing Decreasing String · 28 lines
Increasing Order Search Tree · 38 lines
Increasing Subsequences · 23 lines
Increasing Triplet Subsequence · 19 lines
Incremental Memory Leak · 15 lines
Insert Delete GetRandom O(1) · 28 lines
Insert Delete GetRandom O(1) - Duplicates allowed · 60 lines
Insert Interval · 27 lines
Insert into a Binary Search Tree · 25 lines
Insertion Sort List · 28 lines
Insufficient Nodes in Root to Leaf Paths · 28 lines
Integer Break · 18 lines
Integer Replacement · 14 lines
Integer to English Words · 64 lines
Integer to Roman · 59 lines
Interleaving String · 31 lines
Intersection of Multiple Arrays · 25 lines
Intersection of Two Arrays · 36 lines
Intersection of Two Arrays II · 27 lines
Intersection of Two Linked Lists · 81 lines
Interval List Intersections · 23 lines
Intervals Between Identical Elements · 30 lines
Invalid Transactions · 75 lines
Invert Binary Tree · 12 lines
IPO · 26 lines
Is Graph Bipartite? · 22 lines
Island Perimeter · 18 lines
Isomorphic Strings · 18 lines
Is Subsequence · 19 lines
Iterator for Combination · 32 lines
Jewels and Stones · 16 lines
Jump Game · 12 lines
Jump Game II · 23 lines
Jump Game III · 14 lines
Jump Game IV · 44 lines
Jump Game V · 37 lines
Jump Game VI · 19 lines
Jump Game VII · 24 lines
K Closest Points to Origin · 22 lines
K-Concatenation Maximum Sum · 52 lines
K-diff Pairs in an Array · 16 lines
K Divisible Elements Subarrays · 20 lines
Keep Multiplying Found Values by Two · 20 lines
Keyboard Row · 56 lines
Keys and Rooms · 17 lines
K Highest Ranked Items Within a Price Range · 71 lines
Kids With the Greatest Number of Candies · 18 lines
K Inverse Pairs Array · 19 lines
Knight Dialer · 30 lines
Knight Probability in Chessboard · 53 lines
Koko Eating Bananas · 26 lines
K Radius Subarray Averages · 28 lines
K-Similar Strings · 21 lines
Kth Ancestor of a Tree Node · 27 lines
Kth Distinct String in an Array · 18 lines
Kth Largest Element in an Array · 15 lines
Kth Largest Element in a Stream · 23 lines
Kth Missing Positive Number · 16 lines
Kth Smallest Element in a BST · 15 lines
Kth Smallest Element in a Sorted Matrix · 18 lines
K-th Smallest in Lexicographical Order · 85 lines
Kth Smallest Instructions · 45 lines
Kth Smallest Number in Multiplication Table · 24 lines
K-th Smallest Prime Fraction · 20 lines
Kth Smallest Product of Two Sorted Arrays · 62 lines
K-th Symbol in Grammar · 20 lines
Largest 1-Bordered Square · 52 lines
Largest 3-Same-Digit Number in String · 15 lines
Largest Color Value in a Directed Graph · 45 lines
Largest Combination With Bitwise AND Greater Than Zero · 20 lines
Largest Component Size by Common Factor · 70 lines
Largest Divisible Subset · 37 lines
Largest Magic Square · 82 lines
Largest Merge Of Two Strings · 23 lines
Largest Multiple of Three · 77 lines
Largest Number · 17 lines
Largest Number After Digit Swaps by Parity · 32 lines
Largest Number After Mutating Substring · 21 lines
Largest Number At Least Twice of Others · 21 lines
Largest Odd Number in String · 32 lines
Largest Palindrome Product · 24 lines
Largest Perimeter Triangle · 16 lines
Largest Plus Sign · 56 lines
Largest Rectangle in Histogram · 60 lines
Largest Submatrix With Rearrangements · 25 lines
Largest Substring Between Two Equal Characters · 16 lines
Largest Sum of Averages · 25 lines
Largest Time for Given Digits · 54 lines
Largest Triangle Area · 18 lines
Largest Values From Labels · 31 lines
Last Day Where You Can Still Cross · 51 lines
Last Moment Before All Ants Fall Out of a Plank · 9 lines
Last Stone Weight · 11 lines
Last Stone Weight II · 35 lines
Last Substring in Lexicographical Order · 25 lines
Latest Time by Replacing Hidden Digits · 21 lines
Leaf-Similar Trees · 19 lines
Least Number of Unique Integers after K Removals · 28 lines
Least Operators to Express Number · 39 lines
Lemonade Change · 36 lines
Length of Last Word · 20 lines
Length of Longest Fibonacci Subsequence · 40 lines
Letter Case Permutation · 20 lines
Letter Combinations of a Phone Number · 38 lines
Letter Tile Possibilities · 30 lines
Lexicographically Smallest String After Applying Operations · 25 lines
Lexicographical Numbers · 15 lines
LFU Cache · 88 lines
License Key Formatting · 24 lines
Linked List Components · 16 lines
Linked List Cycle · 25 lines
Linked List Cycle II · 16 lines
Linked List in Binary Tree · 15 lines
Linked List Random Node · 30 lines
Logical OR of Two Binary Grids Represented as Quad-Trees · 37 lines
Longer Contiguous Segments of Ones than Zeros · 29 lines
Longest Absolute File Path · 40 lines
Longest Arithmetic Subsequence · 14 lines
Longest Arithmetic Subsequence of Given Difference · 25 lines
Longest Binary Subsequence Less Than or Equal to K · 23 lines
Longest Chunked Palindrome Decomposition · 27 lines
Longest Common Prefix · 19 lines
Longest Common Subpath · 71 lines
Longest Common Subsequence · 13 lines
Longest Consecutive Sequence · 24 lines
Longest Continuous Increasing Subsequence · 23 lines
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit · 27 lines
Longest Cycle in a Graph · 27 lines
Longest Duplicate Substring · 48 lines
Longest Happy Prefix · 25 lines
Longest Happy String · 43 lines
Longest Harmonious Subsequence · 20 lines
Longest Ideal Subsequence · 18 lines
Longest Increasing Path in a Matrix · 63 lines
Longest Increasing Subsequence · 15 lines
Longest Mountain in Array · 34 lines
Longest Nice Substring · 30 lines
Longest Palindrome · 18 lines
Longest Palindrome by Concatenating Two Letter Words · 28 lines
Longest Palindromic Subsequence · 22 lines
Longest Palindromic Substring · 30 lines
Longest Path With Different Adjacent Characters · 42 lines
Longest Repeating Character Replacement · 24 lines
Longest String Chain · 28 lines
Longest Subarray of 1's After Deleting One Element · 20 lines
Longest Subsequence Repeated k Times · 39 lines
Longest Substring Of All Vowels in Order · 26 lines
Longest Substring of One Repeating Character · 75 lines
Longest Substring with At Least K Repeating Characters · 63 lines
Longest Substring Without Repeating Characters · 15 lines
Longest Turbulent Subarray · 27 lines
Longest Uncommon Subsequence I · 12 lines
Longest Uncommon Subsequence II · 35 lines
Longest Univalue Path · 50 lines
Longest Valid Parentheses · 32 lines
Longest Well-Performing Interval · 22 lines
Longest Word in Dictionary · 44 lines
Longest Word in Dictionary through Deleting · 31 lines
Longest ZigZag Path in a Binary Tree · 17 lines
Long Pressed Name · 15 lines
Loud and Rich · 33 lines
Lowest Common Ancestor of a Binary Search Tree · 10 lines
Lowest Common Ancestor of a Binary Tree · 18 lines
Lowest Common Ancestor of Deepest Leaves · 22 lines
LRU Cache · 65 lines
Lucky Numbers in a Matrix · 32 lines
Magical String · 24 lines
Magic Squares In Grid · 37 lines
Magnetic Force Between Two Balls · 31 lines
Majority Element · 26 lines
Majority Element II · 42 lines
Make Array Strictly Increasing · 101 lines
Make Array Zero by Subtracting Equal Amounts · 25 lines
Make Sum Divisible by P · 22 lines
Make The String Great · 28 lines
Make the XOR of All Segments Equal to Zero · 42 lines
Make Two Arrays Equal by Reversing Sub-arrays · 17 lines
Making A Large Island · 43 lines
Making File Names Unique · 64 lines
Map of Highest Peak · 61 lines
Map Sum Pairs · 21 lines
Masking Personal Information · 25 lines
Matchsticks to Square · 43 lines
Match Substring After Replacement · 21 lines
Matrix Block Sum · 31 lines
Matrix Cells in Distance Order · 17 lines
Matrix Diagonal Sum · 15 lines
Max Area of Island · 22 lines
Max Chunks To Make Sorted · 20 lines
Max Chunks To Make Sorted II · 18 lines
Max Consecutive Ones · 19 lines
Max Consecutive Ones III · 21 lines
Max Difference You Can Get From Changing an Integer · 69 lines
Max Dot Product of Two Subsequences · 28 lines
Maximal Network Rank · 25 lines
Maximal Rectangle · 89 lines
Maximal Square · 27 lines
Maximize Distance to Closest Person · 20 lines
Maximize Grid Happiness · 72 lines
Maximize Number of Nice Divisors · 20 lines
Maximize Number of Subsequences in a String · 35 lines
Maximize Palindrome Length From Subsequences · 80 lines
Maximize Score After N Operations · 33 lines
Maximize Sum Of Array After K Negations · 19 lines
Maximize the Confusion of an Exam · 23 lines
Maximize the Topmost Element After K Moves · 17 lines
Maximum 69 Number · 19 lines
Maximum Absolute Sum of Any Subarray · 21 lines
Maximum Alternating Subsequence Sum · 14 lines
Maximum AND Sum of Array · 38 lines
Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts · 25 lines
Maximum Ascending Subarray Sum · 15 lines
Maximum Average Pass Ratio · 28 lines
Maximum Average Subarray I · 34 lines
Maximum Bags With Full Capacity of Rocks · 16 lines
Maximum Binary String After Change · 22 lines
Maximum Binary Tree · 38 lines
Maximum Binary Tree II · 43 lines
Maximum Building Height · 22 lines
Maximum Candies Allocated to K Children · 32 lines
Maximum Candies You Can Get from Boxes · 36 lines
Maximum Compatibility Score Sum · 36 lines
Maximum Consecutive Floors Without Special Floors · 13 lines
Maximum Depth of Binary Tree · 9 lines
Maximum Depth of N-ary Tree · 20 lines
Maximum Difference Between Increasing Elements · 11 lines
Maximum Difference Between Node and Ancestor · 19 lines
Maximum Distance Between a Pair of Values · 14 lines
Maximum Earnings From Taxi · 37 lines
Maximum Element After Decreasing and Rearranging · 14 lines
Maximum Employees to Be Invited to a Meeting · 53 lines
Maximum Equal Frequency · 29 lines
Maximum Erasure Value · 27 lines
Maximum Frequency Stack · 46 lines
Maximum Fruits Harvested After at Most K Steps · 24 lines
Maximum Gap · 19 lines
Maximum Genetic Difference Query · 100 lines
Maximum Good People Based on Statements · 51 lines
Maximum Height by Stacking Cuboids · 24 lines
Maximum Ice Cream Bars · 15 lines
Maximum Length of a Concatenated String with Unique Characters · 47 lines
Maximum Length of Pair Chain · 28 lines
Maximum Length of Repeated Subarray · 45 lines
Maximum Length of Subarray With Positive Product · 26 lines
Maximum Level Sum of a Binary Tree · 30 lines
Maximum Matrix Sum · 40 lines
Maximum Nesting Depth of the Parentheses · 14 lines
Maximum Nesting Depth of Two Valid Parentheses Strings · 39 lines
Maximum Non Negative Product in a Matrix · 32 lines
Maximum Number of Achievable Transfer Requests · 29 lines
Maximum Number of Balloons · 23 lines
Maximum Number of Balls in a Box · 17 lines
Maximum Number of Coins You Can Get · 16 lines
Maximum Number of Consecutive Values You Can Make · 13 lines
Maximum Number of Eaten Apples · 27 lines
Maximum Number of Events That Can Be Attended · 26 lines
Maximum Number of Events That Can Be Attended II · 35 lines
Maximum Number of Groups Getting Fresh Donuts · 40 lines
Maximum Number of Non-Overlapping Subarrays With Sum Equals Target · 14 lines
Maximum Number of Non-Overlapping Substrings · 62 lines
Maximum Number of Occurrences of a Substring · 27 lines
Maximum Number of Pairs in Array · 16 lines
Maximum Number of Points with Cost · 25 lines
Maximum Number of Removable Characters · 30 lines
Maximum Number of Tasks You Can Assign · 32 lines
Maximum Number of Visible Points · 25 lines
Maximum Number of Vowels in a Substring of Given Length · 23 lines
Maximum Number of Ways to Partition an Array · 48 lines
Maximum Number of Weeks for Which You Can Work · 10 lines
Maximum Number of Words Found in Sentences · 11 lines
Maximum Number of Words You Can Type · 29 lines
Maximum of Absolute Value Expression · 22 lines
Maximum Path Quality of a Graph · 46 lines
Maximum Performance of a Team · 21 lines
Maximum Points in an Archery Competition · 35 lines
Maximum Points You Can Obtain from Cards · 20 lines
Maximum Population Year · 16 lines
Maximum Product After K Increments · 21 lines
Maximum Product Difference Between Two Pairs · 32 lines
Maximum Product of Splitted Binary Tree · 27 lines
Maximum Product of the Length of Two Palindromic Subsequences · 34 lines
Maximum Product of the Length of Two Palindromic Substrings · 53 lines
Maximum Product of Three Numbers · 34 lines
Maximum Product of Two Elements in an Array · 8 lines
Maximum Product of Word Lengths · 30 lines
Maximum Product Subarray · 23 lines
Maximum Profit in Job Scheduling · 45 lines
Maximum Profit of Operating a Centennial Wheel · 41 lines
Maximum Repeating Substring · 14 lines
Maximum Running Time of N Computers · 39 lines
Maximum Score After Splitting a String · 16 lines
Maximum Score from Performing Multiplication Operations · 26 lines
Maximum Score From Removing Stones · 6 lines
Maximum Score From Removing Substrings · 34 lines
Maximum Score of a Good Subarray · 18 lines
Maximum Score of a Node Sequence · 31 lines
Maximum Score Of Spliced Array · 29 lines
Maximum Score Words Formed by Letters · 32 lines
Maximum Side Length of a Square with Sum Less than or Equal to Threshold · 64 lines
Maximum Split of Positive Even Integers · 62 lines
Maximum Students Taking Exam · 35 lines
Maximum Subarray · 12 lines
Maximum Subarray Sum with One Deletion · 20 lines
Maximum Sum BST in Binary Tree · 26 lines
Maximum Sum Circular Subarray · 14 lines
Maximum Sum Obtained of Any Permutation · 33 lines
Maximum Sum of 3 Non-Overlapping Subarrays · 49 lines
Maximum Sum of Two Non-Overlapping Subarrays · 31 lines
Maximum Swap · 24 lines
Maximum Total Beauty of the Gardens · 69 lines
Maximum Total Importance of Roads · 23 lines
Maximum Trailing Zeros in a Cornered Path · 34 lines
Maximum Twin Sum of a Linked List · 42 lines
Maximum Units on a Truck · 21 lines
Maximum Value after Insertion · 33 lines
Maximum Value at a Given Index in a Bounded Array · 32 lines
Maximum Value of K Coins From Piles · 33 lines
Maximum White Tiles Covered by a Carpet · 37 lines
Maximum Width of Binary Tree · 27 lines
Maximum Width Ramp · 24 lines
Maximum XOR After Operations · 10 lines
Maximum XOR for Each Query · 19 lines
Maximum XOR of Two Numbers in an Array · 68 lines
Maximum XOR With an Element From Array · 81 lines
Max Increase to Keep City Skyline · 30 lines
Max Number of K-Sum Pairs · 23 lines
Max Points on a Line · 38 lines
Max Sum of a Pair With Equal Sum of Digits · 15 lines
Max Sum of Rectangle No Larger Than K · 77 lines
Max Value of Equation · 20 lines
Mean of Array After Removing Some Elements · 10 lines
Median of Two Sorted Arrays · 39 lines
Merge BSTs to Create Single BST · 87 lines
Merge In Between Linked Lists · 29 lines
Merge Intervals · 19 lines
Merge k Sorted Lists · 24 lines
Merge Similar Items · 14 lines
Merge Sorted Array · 30 lines
Merge Strings Alternately · 20 lines
Merge Triplets to Form Target Triplet · 12 lines
Merge Two Binary Trees · 23 lines
Merge Two Sorted Lists · 21 lines
Middle of the Linked List · 22 lines
Min Cost Climbing Stairs · 17 lines
Min Cost to Connect All Points · 28 lines
Minesweeper · 37 lines
Minimize Deviation in Array · 35 lines
Minimized Maximum of Products Distributed to Any Store · 19 lines
Minimize Hamming Distance After Swap Operations · 47 lines
Minimize Malware Spread · 59 lines
Minimize Malware Spread II · 43 lines
Minimize Maximum Pair Sum in Array · 15 lines
Minimize the Difference Between Target and Chosen Elements · 27 lines
Minimum Absolute Difference · 19 lines
Minimum Absolute Difference in BST · 16 lines
Minimum Absolute Difference Queries · 61 lines
Minimum Absolute Sum Difference · 30 lines
Minimum Add to Make Parentheses Valid · 20 lines
Minimum Adjacent Swaps to Reach the Kth Smallest Number · 34 lines
Minimum Amount of Time to Fill Cups · 15 lines
Minimum Area Rectangle · 25 lines
Minimum Area Rectangle II · 25 lines
Minimum ASCII Delete Sum for Two Strings · 35 lines
Minimum Average Difference · 23 lines
Minimum Bit Flips to Convert Number · 6 lines
Minimum Changes To Make Alternating Binary String · 10 lines
Minimum Consecutive Cards to Pick Up · 14 lines
Minimum Cost For Tickets · 16 lines
Minimum Cost Homecoming of a Robot in a Grid · 22 lines
Minimum Cost of Buying Candies With Discount · 24 lines
Minimum Cost to Change the Final Value of Expression · 66 lines
Minimum Cost to Connect Two Groups of Points · 33 lines
Minimum Cost to Cut a Stick · 21 lines
Minimum Cost to Hire K Workers · 27 lines
Minimum Cost to Make at Least One Valid Path in a Grid · 61 lines
Minimum Cost to Merge Stones · 25 lines
Minimum Cost to Move Chips to The Same Position · 13 lines
Minimum Cost to Reach Destination in Time · 69 lines
Minimum Cost Tree From Leaf Values · 22 lines
Minimum Degree of a Connected Trio in a Graph · 27 lines
Minimum Deletions to Make Array Beautiful · 13 lines
Minimum Deletions to Make Array Divisible · 30 lines
Minimum Deletions to Make Character Frequencies Unique · 32 lines
Minimum Deletions to Make String Balanced · 21 lines
Minimum Depth of Binary Tree · 21 lines
Minimum Difference Between Highest and Lowest of K Scores · 9 lines
Minimum Difference Between Largest and Smallest Value in Three Moves · 15 lines
Minimum Difference in Sums After Removal of Elements · 39 lines
Minimum Difficulty of a Job Schedule · 26 lines
Minimum Distance Between BST Nodes · 16 lines
Minimum Distance to the Target Element · 16 lines
Minimum Distance to Type a Word Using Two Fingers · 43 lines
Minimum Domino Rotations For Equal Row · 47 lines
Minimum Elements to Add to Form a Given Sum · 17 lines
Minimum Falling Path Sum · 49 lines
Minimum Falling Path Sum II · 38 lines
Minimum Flips to Make a OR b Equal to c · 36 lines
Minimum Garden Perimeter to Collect Enough Apples · 13 lines
Minimum Genetic Mutation · 38 lines
Minimum Height Trees · 79 lines
Minimum Incompatibility · 55 lines
Minimum Increment to Make Array Unique · 15 lines
Minimum Index Sum of Two Lists · 24 lines
Minimum Initial Energy to Finish Tasks · 13 lines
Minimum Insertion Steps to Make a String Palindrome · 25 lines
Minimum Insertions to Balance a Parentheses String · 28 lines
Minimum Interval to Include Each Query · 88 lines
Minimum Jumps to Reach Home · 34 lines
Minimum Length of String After Deleting Similar Ends · 27 lines
Minimum Limit of Balls in a Bag · 31 lines
Minimum Moves to Convert String · 18 lines
Minimum Moves to Equal Array Elements · 13 lines
Minimum Moves to Equal Array Elements II · 12 lines
Minimum Moves to Make Array Complementary · 18 lines
Minimum Moves to Move a Box to Their Target Location · 174 lines
Minimum Moves to Reach Target Score · 17 lines
Minimum Moves to Reach Target with Rotations · 85 lines
Minimum Non-Zero Product of the Array Elements · 25 lines
Minimum Number of Arrows to Burst Balloons · 21 lines
Minimum Number of Buckets Required to Collect Rainwater from Houses · 23 lines
Minimum Number of Days to Disconnect Island · 90 lines
Minimum Number of Days to Eat N Oranges · 35 lines
Minimum Number of Days to Make m Bouquets · 34 lines
Minimum Number of Flips to Convert Binary Matrix to Zero Matrix · 44 lines
Minimum Number of Flips to Make the Binary String Alternating · 24 lines
Minimum Number of Frogs Croaking · 32 lines
Minimum Number of Increments on Subarrays to Form a Target Array · 12 lines
Minimum Number of K Consecutive Bit Flips · 37 lines
Minimum Number of Moves to Make Palindrome · 46 lines
Minimum Number of Moves to Seat Everyone · 12 lines
Minimum Number of Operations to Convert Time · 19 lines
Minimum Number of Operations to Make Array Continuous · 23 lines
Minimum Number of Operations to Make String Sorted · 53 lines
Minimum Number of Operations to Move All Balls to Each Box · 17 lines
Minimum Number of Operations to Reinitialize a Permutation · 37 lines
Minimum Number of People to Teach · 52 lines
Minimum Number of Refueling Stops · 41 lines
Minimum Number of Removals to Make Mountain Array · 34 lines
Minimum Number of Steps to Make Two Strings Anagram · 15 lines
Minimum Number of Swaps to Make the Binary String Alternating · 19 lines
Minimum Number of Swaps to Make the String Balanced · 21 lines
Minimum Number of Taps to Open to Water a Garden · 44 lines
Minimum Number of Vertices to Reach All Nodes · 17 lines
Minimum Number of Work Sessions to Finish the Tasks · 25 lines
Minimum Numbers of Function Calls to Make Target Array · 21 lines
Minimum Obstacle Removal to Reach Corner · 33 lines
Minimum One Bit Operations to Make Integers Zero · 13 lines
Minimum Operations to Convert Number · 43 lines
Minimum Operations to Halve Array Sum · 24 lines
Minimum Operations to Make Array Equal · 10 lines
Minimum Operations to Make a Subsequence · 35 lines
Minimum Operations to Make a Uni-Value Grid · 18 lines
Minimum Operations to Make the Array Alternating · 77 lines
Minimum Operations to Make the Array Increasing · 15 lines
Minimum Operations to Make the Array K-Increasing · 29 lines
Minimum Path Cost in a Grid · 22 lines
Minimum Path Sum · 21 lines
Minimum Possible Integer After at Most K Adjacent Swaps On Digits · 83 lines
Minimum Remove to Make Valid Parentheses · 33 lines
Minimum Replacements to Sort the Array · 22 lines
Minimum Rounds to Complete All Tasks · 21 lines
Minimum Score After Removals on a Tree · 62 lines
Minimum Score Triangulation of Polygon · 18 lines
Minimum Sideway Jumps · 30 lines
Minimum Size Subarray Sum · 16 lines
Minimum Skips to Arrive at Meeting On Time · 38 lines
Minimum Space Wasted From Packaging · 54 lines
Minimum Speed to Arrive on Time · 26 lines
Minimum Subsequence in Non-Increasing Order · 18 lines
Minimum Suffix Flips · 18 lines
Minimum Sum of Four Digit Number After Splitting Digits · 9 lines
Minimum Sum of Squared Difference · 29 lines
Minimum Swaps to Arrange a Binary Grid · 27 lines
Minimum Swaps to Group All 1's Together II · 26 lines
Minimum Swaps To Make Sequences Increasing · 36 lines
Minimum Swaps to Make Strings Equal · 18 lines
Minimum Time Difference · 36 lines
Minimum Time to Collect All Apples in a Tree · 66 lines
Minimum Time to Complete Trips · 28 lines
Minimum Time to Finish the Race · 42 lines
Minimum Time to Make Rope Colorful · 15 lines
Minimum Time to Remove All Cars Containing Illegal Goods · 26 lines
Minimum Time to Type Word Using Special Typewriter · 11 lines
Minimum Time Visiting All Points · 15 lines
Minimum Total Space Wasted With K Resizing Operations · 24 lines
Minimum Value to Get Positive Step by Step Sum · 11 lines
Minimum Weighted Subgraph With the Required Paths · 49 lines
Minimum Window Substring · 32 lines
Minimum XOR Sum of Two Arrays · 20 lines
Mini Parser · 35 lines
Min Max Game · 16 lines
Min Stack · 37 lines
Mirror Reflection · 10 lines
Missing Number · 12 lines
Monotone Increasing Digits · 17 lines
Monotonic Array · 8 lines
Most Beautiful Item for Each Query · 43 lines
Most Common Word · 29 lines
Most Frequent Subtree Sum · 24 lines
Most Profit Assigning Work · 33 lines
Most Stones Removed with Same Row or Column · 53 lines
Most Visited Sector in a Circular Track · 24 lines
Move Pieces to Obtain a String · 18 lines
Move Zeroes · 17 lines
Moving Stones Until Consecutive · 26 lines
Moving Stones Until Consecutive II · 31 lines
Multiply Strings · 49 lines
My Calendar I · 16 lines
My Calendar II · 20 lines
My Calendar III · 16 lines
Naming a Company · 22 lines
N-ary Tree Level Order Traversal · 22 lines
N-ary Tree Postorder Traversal · 14 lines
N-ary Tree Preorder Traversal · 17 lines
Nearest Exit from Entrance in Maze · 61 lines
Network Delay Time · 46 lines
New 21 Game · 18 lines
Next Greater Element I · 28 lines
Next Greater Element II · 24 lines
Next Greater Element III · 26 lines
Next Greater Node In Linked List · 27 lines
Next Greater Numerically Balanced Number · 22 lines
Next Permutation · 15 lines
Nim Game · 6 lines
Non-decreasing Array · 34 lines
Non-negative Integers without Consecutive Ones · 47 lines
Non-overlapping Intervals · 26 lines
N-Queens · 59 lines
N-Queens II · 19 lines
N-Repeated Element in Size 2N Array · 15 lines
Nth Digit · 34 lines
Nth Magical Number · 69 lines
N-th Tribonacci Number · 19 lines
Number Complement · 11 lines
Number of 1 Bits · 11 lines
Number of Arithmetic Triplets · 16 lines
Number of Atoms · 118 lines
Number of Boomerangs · 24 lines
Number of Burgers with No Waste of Ingredients · 34 lines
Number of Closed Islands · 37 lines
Number of Days Between Two Dates · 20 lines
Number of Dice Rolls With Target Sum · 23 lines
Number of Different Integers in a String · 15 lines
Number of Different Subsequences GCDs · 22 lines
Number of Digit One · 14 lines
Number of Distinct Roll Sequences · 21 lines
Number of Enclaves · 44 lines
Number of Equivalent Domino Pairs · 17 lines
Number of Excellent Pairs · 29 lines
Number of Flowers in Full Bloom · 26 lines
Number of Good Leaf Nodes Pairs · 40 lines
Number of Good Pairs · 15 lines
Number of Good Ways to Split a String · 22 lines
Number of Increasing Paths in a Grid · 33 lines
Number of Islands · 31 lines
Number of Laser Beams in a Bank · 15 lines
Number of Lines To Write String · 25 lines
Number of Longest Increasing Subsequence · 20 lines
Number of Matching Subsequences · 26 lines
Number of Music Playlists · 31 lines
Number of Nodes in the Sub-Tree With the Same Label · 41 lines
Number of Operations to Make Network Connected · 46 lines
Number of Orders in the Backlog · 43 lines
Number of Pairs of Interchangeable Rectangles · 19 lines
Number of Pairs of Strings With Concatenation Equal to Target · 21 lines
Number of Paths with Max Score · 31 lines
Number of People Aware of a Secret · 25 lines
Number of Provinces · 30 lines
Number of Recent Calls · 15 lines
Number Of Rectangles That Can Form The Largest Square · 18 lines
Number of Restricted Paths From First to Last Node · 48 lines
Number of Segments in a String · 17 lines
Number of Sets of K Non-Overlapping Line Segments · 20 lines
Number of Smooth Descent Periods of a Stock · 23 lines
Number of Squareful Arrays · 23 lines
Number of Steps to Reduce a Number in Binary Representation to One · 34 lines
Number of Steps to Reduce a Number to Zero · 21 lines
Number of Strings That Appear as Substrings in Word · 10 lines
Number of Students Doing Homework at a Given Time · 10 lines
Number of Students Unable to Eat Lunch · 24 lines
Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold · 23 lines
Number of Subarrays with Bounded Maximum · 23 lines
Number of Sub-arrays With Odd Sum · 30 lines
Number of Submatrices That Sum to Target · 27 lines
Number of Subsequences That Satisfy the Given Sum Condition · 46 lines
Number of Substrings Containing All Three Characters · 24 lines
Number of Substrings With Only 1s · 31 lines
Number of Times Binary String Is Prefix-Aligned · 50 lines
Number of Unique Good Subsequences · 20 lines
Number of Valid Move Combinations On Chessboard · 103 lines
Number of Valid Words for Each Puzzle · 21 lines
Number of Valid Words in a Sentence · 23 lines
Number of Visible People in a Queue · 34 lines
Number of Ways of Cutting a Pizza · 68 lines
Number of Ways to Arrive at Destination · 42 lines
Number of Ways to Buy Pens and Pencils · 14 lines
Number of Ways to Divide a Long Corridor · 25 lines
Number of Ways to Form a Target String Given a Dictionary · 83 lines
Number of Ways to Paint N × 3 Grid · 13 lines
Number of Ways to Rearrange Sticks With K Sticks Visible · 30 lines
Number Of Ways To Reconstruct A Tree · 62 lines
Number of Ways to Reorder Array to Get Same BST · 91 lines
Number of Ways to Select Buildings · 28 lines
Number of Ways to Separate Numbers · 35 lines
Number of Ways to Split Array · 15 lines
Number of Ways to Split a String · 22 lines
Number of Ways to Stay in the Same Place After Some Steps · 17 lines
Number of Ways to Wear Different Hats to Each Other · 58 lines
Number of Ways Where Square of Number Is Equal to Product of Two Numbers · 26 lines
Number of Wonderful Substrings · 24 lines
Number of Zero-Filled Subarrays · 17 lines
Numbers At Most N Given Digit Set · 75 lines
Numbers With Repeated Digits · 48 lines
Numbers With Same Consecutive Differences · 24 lines
Occurrences After Bigram · 35 lines
Odd Even Jump · 65 lines
Odd Even Linked List · 28 lines
Ones and Zeroes · 36 lines
Online Election · 40 lines
Online Majority Element In Subarray · 58 lines
Online Stock Span · 26 lines
Open the Lock · 30 lines
Operations on Tree · 83 lines
Optimal Division · 29 lines
Orderly Queue · 20 lines
Out of Boundary Paths · 29 lines
Pacific Atlantic Water Flow · 53 lines
Paint House III · 33 lines
Painting a Grid With Three Different Colors · 43 lines
Pairs of Songs With Total Durations Divisible by 60 · 18 lines
Palindrome Linked List · 33 lines
Palindrome Number · 19 lines
Palindrome Pairs · 76 lines
Palindrome Partitioning · 30 lines
Palindrome Partitioning II · 65 lines
Palindrome Partitioning III · 49 lines
Palindrome Partitioning IV · 21 lines
Palindromic Substrings · 23 lines
Pancake Sorting · 32 lines
Parallel Courses II · 59 lines
Parallel Courses III · 40 lines
Parse Lisp Expression · 120 lines
Parsing A Boolean Expression · 35 lines
Partition Array According to Given Pivot · 21 lines
Partition Array for Maximum Sum · 29 lines
Partition Array into Disjoint Intervals · 33 lines
Partition Array Into Three Parts With Equal Sum · 20 lines
Partition Array Into Two Arrays to Minimize Sum Difference · 26 lines
Partition Array Such That Maximum Difference Is K · 14 lines
Partition Equal Subset Sum · 27 lines
Partitioning Into Minimum Number Of Deci-Binary Numbers · 6 lines
Partition Labels · 25 lines
Partition List · 26 lines
Partition to K Equal Sum Subsets · 28 lines
Pascal's Triangle · 16 lines
Pascal's Triangle II · 13 lines
Patching Array · 23 lines
Path Crossing · 36 lines
Path In Zigzag Labelled Binary Tree · 28 lines
Path Sum · 23 lines
Path Sum II · 40 lines
Path Sum III · 33 lines
Path with Maximum Gold · 46 lines
Path with Maximum Probability · 31 lines
Path With Minimum Effort · 40 lines
Peak Index in a Mountain Array · 6 lines
Peeking Iterator · 51 lines
People Whose List of Favorite Companies Is Not a Subset of Another List · 36 lines
Percentage of Letter in String · 12 lines
Perfect Number · 29 lines
Perfect Rectangle · 24 lines
Perfect Squares · 28 lines
Permutation in String · 13 lines
Permutations · 20 lines
Permutation Sequence · 22 lines
Permutations II · 23 lines
Pizza With 3n Slices · 31 lines
Plates Between Candles · 29 lines
Plus One · 26 lines
Poor Pigs · 10 lines
Populating Next Right Pointers in Each Node · 26 lines
Populating Next Right Pointers in Each Node II · 34 lines
Positions of Large Groups · 27 lines
Possible Bipartition · 29 lines
Powerful Integers · 15 lines
Power of Four · 13 lines
Power of Three · 15 lines
Power of Two · 8 lines
Pow(x, n) · 27 lines
Predict the Winner · 21 lines
Prefix and Suffix Search · 82 lines
Preimage Size of Factorial Zeroes Function · 31 lines
Previous Permutation With One Swap · 12 lines
Prime Arrangements · 25 lines
Prime Number of Set Bits in Binary Representation · 56 lines
Prime Palindrome · 32 lines
Print Binary Tree · 24 lines
Print Words Vertically · 40 lines
Prison Cells After N Days · 22 lines
Probability of a Two Boxes Having The Same Number of Distinct Balls · 31 lines
Process Restricted Friend Requests · 72 lines
Process Tasks Using Servers · 45 lines
Product of Array Except Self · 23 lines
Product of the Last K Numbers · 29 lines
Profitable Schemes · 24 lines
Projection Area of 3D Shapes · 35 lines
Pseudo-Palindromic Paths in a Binary Tree · 33 lines
Push Dominoes · 43 lines
Pyramid Transition Matrix · 27 lines
Queens That Can Attack the King · 28 lines
Queries on a Permutation With Key · 18 lines
Queries on Number of Points Inside a Circle · 43 lines
Query Kth Smallest Trimmed Number · 24 lines
Queue Reconstruction by Height · 46 lines
Rabbits in Forest · 16 lines
Race Car · 48 lines
Random Flip Matrix · 25 lines
Random Pick Index · 27 lines
Random Pick with Blacklist · 24 lines
Random Pick with Weight · 16 lines
Random Point in Non-overlapping Rectangles · 33 lines
Range Addition II · 9 lines
Range Frequency Queries · 18 lines
Range Module · 127 lines
Range Sum of BST · 17 lines
Range Sum of Sorted Subarray Sums · 22 lines
Range Sum Query 2D - Immutable · 53 lines
Range Sum Query - Immutable · 13 lines
Range Sum Query - Mutable · 30 lines
Rank Teams by Votes · 38 lines
Rank Transform of a Matrix · 91 lines
Rank Transform of an Array · 26 lines
Ransom Note · 14 lines
Reachable Nodes In Subdivided Graph · 51 lines
Reachable Nodes With Restrictions · 35 lines
Reach a Number · 52 lines
Reaching Points · 82 lines
Rearrange Array Elements by Sign · 140 lines
Rearrange Characters to Make Target String · 23 lines
Rearrange Spaces Between Words · 44 lines
Rearrange Words in a Sentence · 34 lines
Reconstruct a 2-Row Binary Matrix · 34 lines
Reconstruct Itinerary · 25 lines
Reconstruct Original Digits from English · 50 lines
Recover a Tree From Preorder Traversal · 65 lines
Recover Binary Search Tree · 23 lines
Recover the Original Array · 34 lines
Rectangle Area · 23 lines
Rectangle Area II · 62 lines
Rectangle Overlap · 24 lines
Redistribute Characters to Make All Strings Equal · 16 lines
Reduce Array Size to The Half · 23 lines
Reducing Dishes · 18 lines
Reduction Operations to Make the Array Elements Equal · 19 lines
Redundant Connection · 69 lines
Redundant Connection II · 64 lines
Reformat Date · 23 lines
Reformat Phone Number · 53 lines
Reformat The String · 19 lines
Regions Cut By Slashes · 60 lines
Regular Expression Matching · 17 lines
Relative Ranks · 31 lines
Relative Sort Array · 48 lines
Remove All Adjacent Duplicates In String · 25 lines
Remove All Adjacent Duplicates in String II · 56 lines
Remove All Occurrences of a Substring · 35 lines
Remove Boxes · 31 lines
Remove Colored Pieces if Both Neighbors are the Same Color · 14 lines
Remove Comments · 38 lines
Remove Covered Intervals · 20 lines
Remove Digit From Number to Maximize Result · 13 lines
Remove Duplicate Letters · 40 lines
Remove Duplicates from Sorted Array · 13 lines
Remove Duplicates from Sorted Array II · 24 lines
Remove Duplicates from Sorted List · 45 lines
Remove Duplicates from Sorted List II · 22 lines
Remove Element · 18 lines
Remove Invalid Parentheses · 52 lines
Remove K Digits · 47 lines
Remove Linked List Elements · 26 lines
Remove Max Number of Edges to Keep Graph Fully Traversable · 91 lines
Remove Nth Node From End of List · 34 lines
Remove One Element to Make the Array Strictly Increasing · 14 lines
Remove Outermost Parentheses · 24 lines
Remove Palindromic Subsequences · 9 lines
Remove Stones to Minimize the Total · 21 lines
Remove Sub-Folders from the Filesystem · 29 lines
Remove Zero Sum Consecutive Nodes from Linked List · 27 lines
Removing Minimum and Maximum From Array · 15 lines
Removing Minimum Number of Magic Beans · 17 lines
Reorder Data in Log Files · 36 lines
Reordered Power of 2 · 25 lines
Reorder List · 23 lines
Reorder Routes to Make All Paths Lead to the City Zero · 34 lines
Reorganize String · 66 lines
Repeated DNA Sequences · 29 lines
Repeated String Match · 50 lines
Repeated Substring Pattern · 46 lines
Replace All Digits with Characters · 9 lines
Replace All ?'s to Avoid Consecutive Repeating Characters · 30 lines
Replace Elements in an Array · 12 lines
Replace Elements with Greatest Element on Right Side · 24 lines
Replace Non-Coprime Numbers in Array · 14 lines
Replace the Substring for Balanced String · 33 lines
Replace Words · 78 lines
Reshape the Matrix · 23 lines
Restore IP Addresses · 21 lines
Restore The Array · 25 lines
Restore the Array From Adjacent Pairs · 34 lines
Reveal Cards In Increasing Order · 19 lines
Reverse Bits · 20 lines
Reverse Integer · 15 lines
Reverse Linked List · 23 lines
Reverse Linked List II · 56 lines
Reverse Nodes in Even Length Groups · 58 lines
Reverse Nodes in k-Group · 49 lines
Reverse Only Letters · 26 lines
Reverse Pairs · 55 lines
Reverse Prefix of Word · 15 lines
Reverse String · 15 lines
Reverse String II · 17 lines
Reverse Subarray To Maximize Array Value · 34 lines
Reverse Substrings Between Each Pair of Parentheses · 25 lines
Reverse Vowels of a String · 31 lines
Reverse Words in a String · 25 lines
Reverse Words in a String III · 16 lines
Richest Customer Wealth · 12 lines
Rings and Rods · 20 lines
RLE Iterator · 54 lines
Robot Bounded In Circle · 38 lines
Robot Return to Origin · 39 lines
Roman to Integer · 15 lines
Root Equals Sum of Children · 9 lines
Rotate Array · 11 lines
Rotated Digits · 21 lines
Rotate Function · 29 lines
Rotate Image · 14 lines
Rotate List · 38 lines
Rotate String · 13 lines
Rotating the Box · 25 lines
Rotting Oranges · 41 lines
Running Sum of 1d Array · 9 lines
Russian Doll Envelopes · 17 lines
Same Tree · 9 lines
Satisfiability of Equality Equations · 18 lines
Score After Flipping Matrix · 60 lines
Score of Parentheses · 17 lines
Scramble String · 57 lines
Search a 2D Matrix · 15 lines
Search a 2D Matrix II · 19 lines
Search in a Binary Search Tree · 22 lines
Search in Rotated Sorted Array · 72 lines
Search in Rotated Sorted Array II · 59 lines
Search Insert Position · 21 lines
Search Suggestions System · 36 lines
Seat Reservation Manager · 17 lines
Second Largest Digit in a String · 22 lines
Second Minimum Node In a Binary Tree · 26 lines
Second Minimum Time to Reach Destination · 62 lines
Self Crossing · 22 lines
Self Dividing Numbers · 22 lines
Sell Diminishing-Valued Colored Balls · 40 lines
Selling Pieces of Wood · 27 lines
Sender With Largest Word Count · 24 lines
Sentence Similarity III · 1 lines
Sequential Digits · 26 lines
Sequentially Ordinal Rank Tracker · 40 lines
Serialize and Deserialize Binary Tree · 12 lines
Serialize and Deserialize BST · 66 lines
Set Intersection Size At Least Two · 43 lines
Set Matrix Zeroes · 22 lines
Set Mismatch · 18 lines
Shift 2D Grid · 30 lines
Shifting Letters · 21 lines
Shopping Offers · 35 lines
Short Encoding of Words · 53 lines
Shortest Bridge · 78 lines
Shortest Common Supersequence · 56 lines
Shortest Completing Word · 23 lines
Shortest Distance to a Character · 36 lines
Shortest Impossible Sequence of Rolls · 18 lines
Shortest Palindrome · 57 lines
Shortest Path in a Grid with Obstacles Elimination · 39 lines
Shortest Path in Binary Matrix · 30 lines
Shortest Path to Get All Keys · 76 lines
Shortest Path Visiting All Nodes · 41 lines
Shortest Path with Alternating Colors · 41 lines
Shortest Subarray to be Removed to Make Array Sorted · 41 lines
Shortest Subarray with Sum at Least K · 30 lines
Shortest Unsorted Continuous Subarray · 33 lines
Shuffle an Array · 18 lines
Shuffle String · 12 lines
Shuffle the Array · 13 lines
Sign of the Product of an Array · 13 lines
Similar String Groups · 41 lines
Simple Bank System · 33 lines
Simplified Fractions · 45 lines
Simplify Path · 38 lines
Single Element in a Sorted Array · 10 lines
Single Number · 10 lines
Single Number II · 17 lines
Single Number III · 30 lines
Single-Threaded CPU · 60 lines
Sliding Puzzle · 55 lines
Sliding Window Maximum · 19 lines
Sliding Window Median · 125 lines
Slowest Key · 20 lines
Smallest Good Base · 32 lines
Smallest Index With Equal Value · 8 lines
Smallest Integer Divisible by K · 13 lines
Smallest K-Length Subsequence With Occurrences of a Letter · 49 lines
Smallest Missing Genetic Value in Each Subtree · 42 lines
Smallest Number in Infinite Set · 23 lines
Smallest Range Covering Elements from K Lists · 53 lines
Smallest Range I · 9 lines
Smallest Range II · 34 lines
Smallest Rotation with Highest Score · 29 lines
Smallest String Starting From Leaf · 35 lines
Smallest String With A Given Numeric Value · 26 lines
Smallest String With Swaps · 42 lines
Smallest Subsequence of Distinct Characters · 30 lines
Smallest Subtree with all the Deepest Nodes · 54 lines
Smallest Sufficient Team · 72 lines
Smallest Value of the Rearranged Number · 19 lines
Snakes and Ladders · 37 lines
Snapshot Array · 58 lines
Solve the Equation · 17 lines
Sort an Array · 16 lines
Sort Array by Increasing Frequency · 22 lines
Sort Array By Parity · 17 lines
Sort Array By Parity II · 22 lines
Sort Characters By Frequency · 25 lines
Sort Colors · 25 lines
Sort Even and Odd Indices Independently · 25 lines
Sorting the Sentence · 29 lines
Sort Integers by The Number of 1 Bits · 24 lines
Sort Integers by The Power Value · 30 lines
Sort Items by Groups Respecting Dependencies · 107 lines
Sort List · 57 lines
Sort the Jumbled Numbers · 26 lines
Sort the Matrix Diagonally · 24 lines
Soup Servings · 28 lines
Special Array With X Elements Greater Than or Equal X · 15 lines
Special Binary String · 33 lines
Special Positions in a Binary Matrix · 42 lines
Spiral Matrix · 63 lines
Spiral Matrix II · 52 lines
Spiral Matrix III · 38 lines
Spiral Matrix IV · 54 lines
Split Array into Consecutive Subsequences · 56 lines
Split Array into Fibonacci Sequence · 32 lines
Split Array Largest Sum · 36 lines
Split Array With Same Average · 39 lines
Split a String in Balanced Strings · 23 lines
Split a String Into the Max Number of Unique Substrings · 23 lines
Split Linked List in Parts · 31 lines
Splitting a String Into Descending Consecutive Values · 19 lines
Split Two Strings to Make Palindrome · 39 lines
Sqrt(x) · 21 lines
Squares of a Sorted Array · 10 lines
Stamping the Grid · 64 lines
Stamping The Sequence · 27 lines
Statistics from a Large Sample · 36 lines
Step-By-Step Directions From a Binary Tree Node to Another · 45 lines
Steps to Make Array Non-decreasing · 31 lines
Stickers to Spell Word · 43 lines
Stock Price Fluctuation · 39 lines
Stone Game · 17 lines
Stone Game II · 20 lines
Stone Game III · 44 lines
Stone Game IV · 17 lines
Stone Game IX · 45 lines
Stone Game V · 31 lines
Stone Game VI · 45 lines
Stone Game VII · 15 lines
Stone Game VIII · 14 lines
Strange Printer · 26 lines
Strange Printer II · 48 lines
Stream of Characters · 78 lines
String Compression · 50 lines
String Compression II · 24 lines
String Matching in an Array · 21 lines
String to Integer (atoi) · 38 lines
String Without AAA or BBB · 18 lines
Strong Password Checker · 409 lines
Strong Password Checker II · 27 lines
Student Attendance Record I · 26 lines
Student Attendance Record II · 51 lines
Subarray Product Less Than K · 15 lines
Subarray Sum Equals K · 34 lines
Subarray Sums Divisible by K · 45 lines
Subarrays with K Different Integers · 43 lines
Subarray With Elements Greater Than Varying Threshold · 32 lines
Subdomain Visit Count · 37 lines
Subrectangle Queries · 19 lines
Subsets · 24 lines
Subsets II · 33 lines
Substrings of Size Three with Distinct Characters · 13 lines
Substring with Concatenation of All Words · 34 lines
Substring With Largest Variance · 37 lines
Subtract the Product and Sum of Digits of an Integer · 17 lines
Subtree of Another Tree · 70 lines
Successful Pairs of Spells and Potions · 18 lines
Sudoku Solver · 35 lines
Sum Game · 43 lines
Summary Ranges · 35 lines
Sum of Absolute Differences in a Sorted Array · 13 lines
Sum of All Odd Length Subarrays · 18 lines
Sum of All Subset XOR Totals · 17 lines
Sum of Beauty in the Array · 30 lines
Sum of Beauty of All Substrings · 20 lines
Sum of Digits in Base K · 8 lines
Sum of Digits of String After Convert · 27 lines
Sum of Distances in Tree · 143 lines
Sum of Even Numbers After Queries · 30 lines
Sum of Floored Pairs · 45 lines
Sum of k-Mirror Numbers · 38 lines
Sum of Left Leaves · 16 lines
Sum of Mutated Array Closest to Target · 48 lines
Sum of Nodes with Even-Valued Grandparent · 17 lines
Sum of Numbers With Units Digit K · 9 lines
Sum of Root To Leaf Binary Numbers · 37 lines
Sum of Scores of Built Strings · 21 lines
Sum of Square Numbers · 21 lines
Sum of Subarray Minimums · 17 lines
Sum of Subarray Ranges · 18 lines
Sum of Subsequence Widths · 17 lines
Sum of Total Strength of Wizards · 48 lines
Sum of Two Integers · 12 lines
Sum of Unique Elements · 14 lines
Sum Root to Leaf Numbers · 22 lines
Super Egg Drop · 23 lines
Super Palindromes · 40 lines
Super Pow · 21 lines
Super Ugly Number · 41 lines
Super Washing Machines · 14 lines
Surface Area of 3D Shapes · 25 lines
Surrounded Regions · 70 lines
Swap Adjacent in LR String · 26 lines
Swap For Longest Repeated Character Substring · 44 lines
Swap Nodes in Pairs · 18 lines
Swapping Nodes in a Linked List · 52 lines
Swim in Rising Water · 44 lines
Symmetric Tree · 17 lines
Tag Validator · 97 lines
Tallest Billboard · 20 lines
Target Sum · 25 lines
Task Scheduler · 20 lines
Task Scheduler II · 34 lines
Teemo Attacking · 14 lines
Text Justification · 55 lines
The Earliest and Latest Rounds Where Players Compete · 29 lines
The k Strongest Values in an Array · 18 lines
The kth Factor of n · 13 lines
The k-th Lexicographical String of All Happy Strings of Length n · 29 lines
The K Weakest Rows in a Matrix · 23 lines
The Latest Time to Catch a Bus · 40 lines
The Number of Full Rounds You Have Played · 17 lines
The Number of Good Subsets · 87 lines
The Number of the Smallest Unoccupied Chair · 44 lines
The Number of Weak Characters in the Game · 20 lines
The Score of Students Solving Math Expression · 110 lines
The Skyline Problem · 26 lines
The Time When the Network Becomes Idle · 48 lines
Third Maximum Number · 16 lines
Thousand Separator · 19 lines
Three Consecutive Odds · 17 lines
Three Divisors · 12 lines
Three Equal Parts · 38 lines
Throne Inheritance · 31 lines
Tiling a Rectangle with the Fewest Squares · 29 lines
Time Based Key-Value Store · 29 lines
Time Needed to Buy Tickets · 16 lines
Time Needed to Inform All Employees · 21 lines
Toeplitz Matrix · 10 lines
To Lower Case · 13 lines
Top K Frequent Elements · 21 lines
Top K Frequent Words · 28 lines
Total Appeal of A String · 23 lines
Total Hamming Distance · 37 lines
Transform to Chessboard · 63 lines
Transpose Matrix · 16 lines
Trapping Rain Water · 24 lines
Trapping Rain Water II · 49 lines
Tree of Coprimes · 42 lines
Triangle · 23 lines
Trim a Binary Search Tree · 29 lines
Triples with Bitwise AND Equal To Zero · 22 lines
Truncate Sentence · 22 lines
Tuple with Same Product · 19 lines
Tweet Counts Per Frequency · 51 lines
Two Best Non-Overlapping Events · 22 lines
Two City Scheduling · 26 lines
Two Furthest Houses With Different Colors · 23 lines
Two Out of Three · 14 lines
Two Sum · 14 lines
Two Sum II - Input Array Is Sorted · 22 lines
Two Sum IV - Input is a BST · 67 lines
Ugly Number · 15 lines
Ugly Number II · 16 lines
Ugly Number III · 58 lines
Uncommon Words from Two Sentences · 25 lines
Uncrossed Lines · 24 lines
Unique Binary Search Trees · 31 lines
Unique Binary Search Trees II · 38 lines
Unique Email Addresses · 18 lines
Unique Length-3 Palindromic Subsequences · 32 lines
Unique Morse Code Words · 21 lines
Unique Number of Occurrences · 18 lines
Unique Paths · 17 lines
Unique Paths II · 26 lines
Unique Paths III · 48 lines
Unique Substrings in Wraparound String · 19 lines
Univalued Binary Tree · 15 lines
UTF-8 Validation · 31 lines
Valid Anagram · 11 lines
Valid Arrangement of Pairs · 46 lines
Validate Binary Search Tree · 20 lines
Validate Binary Tree Nodes · 32 lines
Validate IP Address · 92 lines
Validate Stack Sequences · 17 lines
Valid Boomerang · 13 lines
Valid Mountain Array · 21 lines
Valid Number · 35 lines
Valid Palindrome · 20 lines
Valid Palindrome II · 37 lines
Valid Parentheses · 25 lines
Valid Parenthesis String · 30 lines
Valid Perfect Square · 21 lines
Valid Permutations for DI Sequence · 58 lines
Valid Square · 21 lines
Valid Sudoku · 56 lines
Valid Tic-Tac-Toe State · 52 lines
Valid Triangle Number · 22 lines
Verbal Arithmetic Puzzle · 65 lines
Verifying an Alien Dictionary · 16 lines
Verify Preorder Serialization of a Binary Tree · 16 lines
Vertical Order Traversal of a Binary Tree · 56 lines
Video Stitching · 43 lines
Vowels of All Substrings · 19 lines
Vowel Spellchecker · 73 lines
Walking Robot Simulation · 51 lines
Walking Robot Simulation II · 43 lines
Water and Jug Problem · 32 lines
Water Bottles · 21 lines
Watering Plants · 18 lines
Watering Plants II · 18 lines
Ways to Make a Fair Array · 55 lines
Ways to Split Array Into Three Subarrays · 21 lines
Where Will the Ball Fall · 24 lines
Widest Vertical Area Between Two Points Containing No Points · 10 lines
Wiggle Sort II · 11 lines
Wiggle Subsequence · 21 lines
Wildcard Matching · 21 lines
Word Break · 22 lines
Word Break II · 33 lines
Word Ladder · 75 lines
Word Ladder II · 100 lines
Word Pattern · 39 lines
Word Search · 30 lines
Word Search II · 71 lines
Word Subsets · 42 lines
X of a Kind in a Deck of Cards · 31 lines
XOR Operation in an Array · 10 lines
XOR Queries of a Subarray · 25 lines
Zigzag Conversion · 24 lines
Zuma Game · 54 lines