JavaScript LeetCode Typing Practice

1673 LeetCode solutions in JavaScript. Pick one to type it and see your WPM and accuracy.

01 Matrix · 48 lines
132 Pattern · 20 lines
1-bit and 2-bit Characters · 12 lines
24 Game · 35 lines
2 Keys Keyboard · 11 lines
3Sum · 31 lines
3Sum Closest · 30 lines
3Sum With Multiplicity · 41 lines
4Sum · 26 lines
4Sum II · 27 lines
Accounts Merge · 48 lines
Add Binary · 3 lines
Add Digits · 3 lines
Adding Spaces to a String · 12 lines
Additive Number · 34 lines
Add Minimum Number of Rungs · 9 lines
Add One Row to Tree · 30 lines
Add Strings · 16 lines
Add to Array-Form of Integer · 19 lines
Add Two Integers · 3 lines
Add Two Numbers · 41 lines
Add Two Numbers II · 40 lines
Airplane Seat Assignment Probability · 7 lines
Alert Using Same Key-Card Three or More Times in a One Hour Period · 46 lines
All Ancestors of a Node in a Directed Acyclic Graph · 42 lines
All Divisions With the Highest Score of a Binary Array · 38 lines
All Elements in Two Binary Search Trees · 12 lines
All Nodes Distance K in Binary Tree · 65 lines
Allocate Mailboxes · 42 lines
All O`one Data Structure · 55 lines
All Paths From Source to Target · 19 lines
All Possible Full Binary Trees · 38 lines
Alphabet Board Path · 21 lines
Ambiguous Coordinates · 22 lines
Angle Between Hands of a Clock · 4 lines
A Number After a Double Reversal · 9 lines
Append K Integers With Minimal Sum · 15 lines
Apply Discount Every n Orders · 24 lines
Apply Discount to Prices · 14 lines
Arithmetic Slices · 41 lines
Arithmetic Slices II - Subsequence · 28 lines
Arithmetic Subarrays · 45 lines
Arranging Coins · 8 lines
Array Nesting · 12 lines
Array of Doubled Pairs · 20 lines
Array Partition · 8 lines
Array With Elements Not Equal to Average of Neighbors · 15 lines
As Far from Land as Possible · 43 lines
Assign Cookies · 21 lines
Asteroid Collision · 47 lines
Available Captures for Rook · 48 lines
Average of Levels in Binary Tree · 21 lines
Average Salary Excluding the Minimum and Maximum Salary · 14 lines
Average Waiting Time · 18 lines
Avoid Flood in The City · 46 lines
Backspace String Compare · 25 lines
Bag of Tokens · 32 lines
Balance a Binary Search Tree · 22 lines
Balanced Binary Tree · 27 lines
Base 7 · 21 lines
Baseball Game · 17 lines
Basic Calculator · 76 lines
Basic Calculator II · 37 lines
Battleships in a Board · 23 lines
Beautiful Arrangement · 20 lines
Beautiful Arrangement II · 17 lines
Beautiful Array · 25 lines
Best Poker Hand · 23 lines
Best Position for a Service Centre · 65 lines
Best Sightseeing Pair · 18 lines
Best Team With No Conflicts · 38 lines
Best Time to Buy and Sell Stock · 13 lines
Best Time to Buy and Sell Stock II · 22 lines
Best Time to Buy and Sell Stock III · 26 lines
Best Time to Buy and Sell Stock IV · 20 lines
Best Time to Buy and Sell Stock with Cooldown · 27 lines
Best Time to Buy and Sell Stock with Transaction Fee · 16 lines
Binary Gap · 14 lines
Binary Number with Alternating Bits · 14 lines
Binary Prefix Divisible By 5 · 10 lines
Binary Search · 29 lines
Binary Search Tree Iterator · 42 lines
Binary Search Tree to Greater Sum Tree · 13 lines
Binary Tree Cameras · 30 lines
Binary Tree Coloring Game · 16 lines
Binary Tree Inorder Traversal · 13 lines
Binary Tree Level Order Traversal · 26 lines
Binary Tree Level Order Traversal II · 14 lines
Binary Tree Maximum Path Sum · 20 lines
Binary Tree Paths · 16 lines
Binary Tree Postorder Traversal · 31 lines
Binary Tree Preorder Traversal · 15 lines
Binary Tree Pruning · 31 lines
Binary Tree Right Side View · 23 lines
Binary Trees With Factors · 60 lines
Binary Tree Tilt · 19 lines
Binary Tree Zigzag Level Order Traversal · 31 lines
Binary Watch · 72 lines
Bitwise AND of Numbers Range · 20 lines
Bitwise ORs of Subarrays · 52 lines
Boats to Save People · 25 lines
Brace Expansion II · 47 lines
Break a Palindrome · 19 lines
Bricks Falling When Hit · 54 lines
Brick Wall · 17 lines
Broken Calculator · 21 lines
Buddy Strings · 12 lines
Build an Array With Stack Operations · 19 lines
Build Array from Permutation · 3 lines
Build Array Where You Can Find The Maximum Exactly K Comparisons · 37 lines
Building Boxes · 16 lines
Bulb Switcher · 3 lines
Bulls and Cows · 26 lines
Burst Balloons · 25 lines
Bus Routes · 67 lines
Calculate Amount Paid in Taxes · 14 lines
Calculate Digit Sum of a String · 14 lines
Calculate Money in Leetcode Bank · 19 lines
Camelcase Matching · 19 lines
Can Convert String in K Moves · 49 lines
Candy · 51 lines
Can Make Arithmetic Progression From Sequence · 12 lines
Can Make Palindrome from Substring · 22 lines
Can Place Flowers · 18 lines
Capacity To Ship Packages Within D Days · 38 lines
Capitalize the Title · 11 lines
Card Flipping Game · 28 lines
Car Fleet · 19 lines
Car Fleet II · 47 lines
Car Pooling · 29 lines
Cat and Mouse · 46 lines
Cells in a Range on an Excel Sheet · 11 lines
Cells with Odd Values in a Matrix · 23 lines
Champagne Tower · 24 lines
Cheapest Flights Within K Stops · 31 lines
Check Array Formation Through Concatenation · 10 lines
Check Completeness of a Binary Tree · 30 lines
Check If All 1's Are at Least Length K Places Away · 11 lines
Check if All A's Appears Before All B's · 6 lines
Check if All Characters Have Equal Number of Occurrences · 7 lines
Check if All the Integers in a Range Are Covered · 25 lines
Check if an Original String Exists Given Two Encoded Strings · 65 lines
Check if Array Is Sorted and Rotated · 12 lines
Check If Array Pairs Are Divisible by k · 30 lines
Check If a String Can Break Another String · 25 lines
Check If a String Contains All Binary Codes of Size K · 36 lines
Check If a Word Occurs As a Prefix of Any Word in a Sentence · 11 lines
Check if Binary String Has at Most One Segment of Ones · 3 lines
Check if Every Row and Column Contains All Numbers · 14 lines
Check If It Is a Good Array · 11 lines
Check If It Is a Straight Line · 17 lines
Check if Matrix Is X-Matrix · 23 lines
Check if Move is Legal · 37 lines
Check If N and Its Double Exist · 14 lines
Check if Number Has Equal Digit Count and Digit Value · 10 lines
Check if Numbers Are Ascending in a Sentence · 13 lines
Check If String Is a Prefix of Array · 21 lines
Check if There is a Valid Partition For The Array · 22 lines
Check if There is a Valid Path in a Grid · 106 lines
Check if the Sentence Is Pangram · 3 lines
Check If Two String Arrays are Equivalent · 3 lines
Check if Word Can Be Placed In Crossword · 65 lines
Check if Word Equals Summation of Two Words · 27 lines
Check If Word Is Valid After Substitutions · 13 lines
Check Whether Two Strings are Almost Equivalent · 16 lines
Cherry Pickup · 41 lines
Cherry Pickup II · 42 lines
Cinema Seat Allocation · 74 lines
Circle and Rectangle Overlapping · 14 lines
Circular Array Loop · 49 lines
Circular Permutation in Binary Representation · 23 lines
Climbing Stairs · 8 lines
Clone Graph · 61 lines
Closest Divisors · 30 lines
Closest Subsequence Sum · 34 lines
Clumsy Factorial · 31 lines
Coin Change · 1 lines
Coin Change 2 · 11 lines
Coloring A Border · 62 lines
Combinations · 23 lines
Combination Sum · 23 lines
Combination Sum II · 28 lines
Combination Sum III · 26 lines
Combination Sum IV · 14 lines
Compare Strings by Frequency of the Smallest Character · 15 lines
Compare Version Numbers · 21 lines
Complement of Base 10 Integer · 10 lines
Complete Binary Tree Inserter · 52 lines
Complex Number Multiplication · 10 lines
Concatenated Words · 89 lines
Concatenation of Array · 4 lines
Concatenation of Consecutive Binary Numbers · 11 lines
Consecutive Characters · 11 lines
Consecutive Numbers Sum · 15 lines
Constrained Subsequence Sum · 17 lines
Construct Binary Search Tree from Preorder Traversal · 22 lines
Construct Binary Tree from Inorder and Postorder Traversal · 31 lines
Construct Binary Tree from Preorder and Inorder Traversal · 29 lines
Construct Binary Tree from Preorder and Postorder Traversal · 19 lines
Construct K Palindrome Strings · 17 lines
Construct Quad Tree · 0 lines
Construct String from Binary Tree · 28 lines
Construct String With Repeat Limit · 46 lines
Construct Target Array With Multiple Sums · 29 lines
Construct the Rectangle · 9 lines
Container With Most Water · 25 lines
Contains Duplicate · 25 lines
Contains Duplicate II · 19 lines
Contains Duplicate III · 16 lines
Contain Virus · 119 lines
Contiguous Array · 13 lines
Continuous Subarray Sum · 25 lines
Convert 1D Array Into 2D Array · 13 lines
Convert a Number to Hexadecimal · 55 lines
Convert Binary Number in a Linked List to Integer · 9 lines
Convert BST to Greater Tree · 12 lines
Convert Integer to the Sum of Two No-Zero Integers · 18 lines
Convert Sorted Array to Binary Search Tree · 9 lines
Convert Sorted List to Binary Search Tree · 24 lines
Coordinate With Maximum Network Quality · 48 lines
Copy List with Random Pointer · 42 lines
Corporate Flight Bookings · 20 lines
Count All Possible Routes · 20 lines
Count All Valid Pickup and Delivery Options · 9 lines
Count and Say · 29 lines
Count Artifacts That Can Be Extracted · 49 lines
Count Asterisks · 13 lines
Count Binary Substrings · 46 lines
Count Collisions on a Road · 46 lines
Count Common Words With One Occurrence · 17 lines
Count Complete Tree Nodes · 3 lines
Count Elements With Strictly Smaller and Greater Elements · 23 lines
Count Equal and Divisible Pairs in an Array · 16 lines
Count Good Meals · 35 lines
Count Good Nodes in Binary Tree · 14 lines
Count Good Numbers · 29 lines
Count Good Triplets · 17 lines
Count Good Triplets in an Array · 69 lines
Count Hills and Valleys in an Array · 26 lines
Counting Bits · 18 lines
Counting Words With a Given Prefix · 3 lines
Count Integers With Even Digit Sum · 18 lines
Count Items Matching a Rule · 12 lines
Count Largest Group · 28 lines
Count Lattice Points Inside a Circle · 30 lines
Count Negative Numbers in a Sorted Matrix · 38 lines
Count Nice Pairs in an Array · 34 lines
Count Nodes Equal to Average of Subtree · 20 lines
Count Nodes With the Highest Score · 46 lines
Count Number of Bad Pairs · 20 lines
Count Number of Homogenous Substrings · 19 lines
Count Number of Maximum Bitwise-OR Subsets · 27 lines
Count Number of Nice Subarrays · 43 lines
Count Number of Pairs With Absolute Difference K · 13 lines
Count Number of Rectangles Containing Each Point · 32 lines
Count Number of Teams · 34 lines
Count Number of Texts · 28 lines
Count Number of Ways to Place Houses · 14 lines
Count Numbers with Unique Digits · 21 lines
Count Odd Numbers in an Interval Range · 9 lines
Count of Matches in Tournament · 18 lines
Count of Range Sum · 129 lines
Count of Smaller Numbers After Self · 70 lines
Count Operations to Obtain Zero · 14 lines
Count Pairs Of Nodes · 50 lines
Count Pairs With XOR in a Range · 50 lines
Count Prefixes of a Given String · 12 lines
Count Primes · 28 lines
Count Servers that Communicate · 34 lines
Count Special Quadruplets · 59 lines
Count Square Submatrices with All Ones · 21 lines
Count Square Sum Triples · 13 lines
Count Subarrays With Score Less Than K · 14 lines
Count Sub Islands · 35 lines
Count Submatrices With All Ones · 29 lines
Count Substrings That Differ by One Character · 52 lines
Count the Hidden Sequences · 19 lines
Count the Number of Consistent Strings · 26 lines
Count the Number of Ideal Arrays · 26 lines
Count The Repetitions · 30 lines
Count Triplets That Can Form Two Arrays of Equal XOR · 17 lines
Count Unguarded Cells in the Grid · 65 lines
Count Unhappy Friends · 20 lines
Count Unique Characters of All Substrings of a Given String · 29 lines
Count Unreachable Pairs of Nodes in an Undirected Graph · 47 lines
Count Vowels Permutation · 21 lines
Count Vowel Substrings of a String · 21 lines
Count Words Obtained After Adding a Letter · 22 lines
Couples Holding Hands · 47 lines
Course Schedule · 31 lines
Course Schedule II · 60 lines
Course Schedule III · 18 lines
Course Schedule IV · 30 lines
Cousins in Binary Tree · 29 lines
Crawler Log Folder · 12 lines
Create Binary Tree From Descriptions · 21 lines
Create Maximum Number · 36 lines
Create Sorted Array through Instructions · 42 lines
Create Target Array in the Given Order · 15 lines
Critical Connections in a Network · 47 lines
Custom Sort String · 20 lines
Cut Off Trees for Golf Event · 55 lines
Cyclically Rotating a Grid · 99 lines
Daily Temperatures · 18 lines
Data Stream as Disjoint Intervals · 59 lines
Day of the Week · 19 lines
Day of the Year · 6 lines
Decoded String at Index · 29 lines
Decode String · 26 lines
Decode the Message · 16 lines
Decode the Slanted Ciphertext · 28 lines
Decode Ways · 17 lines
Decode Ways II · 30 lines
Decode XORed Array · 5 lines
Decode XORed Permutation · 14 lines
Decompress Run-Length Encoded List · 9 lines
Decrease Elements To Make Array Zigzag · 34 lines
Decrypt String from Alphabet to Integer Mapping · 10 lines
Deepest Leaves Sum · 22 lines
Defanging an IP Address · 14 lines
Defuse the Bomb · 33 lines
Degree of an Array · 35 lines
Delete and Earn · 33 lines
Delete Characters to Make Fancy String · 17 lines
Delete Columns to Make Sorted · 16 lines
Delete Columns to Make Sorted II · 30 lines
Delete Columns to Make Sorted III · 23 lines
Delete Duplicate Folders in System · 53 lines
Delete Leaves With a Given Value · 15 lines
Delete Node in a BST · 35 lines
Delete Node in a Linked List · 5 lines
Delete Nodes And Return Forest · 24 lines
Delete Operation for Two Strings · 16 lines
Delete the Middle Node of a Linked List · 32 lines
Delivering Boxes from Storage to Ports · 32 lines
Describe the Painting · 24 lines
Design Add and Search Words Data Structure · 51 lines
Design a Food Rating System · 101 lines
Design an ATM Machine · 49 lines
Design an Ordered Stream · 17 lines
Design a Number Container System · 32 lines
Design a Stack With Increment Operation · 29 lines
Design a Text Editor · 62 lines
Design Authentication Manager · 18 lines
Design Bitset · 87 lines
Design Browser History · 34 lines
Design Circular Deque · 86 lines
Design Circular Queue · 81 lines
Design Front Middle Back Queue · 141 lines
Design HashMap · 36 lines
Design HashSet · 34 lines
Design Linked List · 28 lines
Design Parking System · 17 lines
Design Twitter · 34 lines
Design Underground System · 44 lines
Destination City · 15 lines
Detect Capital · 12 lines
Detect Cycles in 2D Grid · 28 lines
Detect Pattern of Length M Repeated K or More Times · 7 lines
Determine if String Halves Are Alike · 15 lines
Determine if Two Strings Are Close · 19 lines
Determine Whether Matrix Can Be Obtained By Rotation · 30 lines
Detonate the Maximum Bombs · 57 lines
Diagonal Traverse · 40 lines
Diagonal Traverse II · 13 lines
Diameter of Binary Tree · 29 lines
Dice Roll Simulation · 25 lines
Different Ways to Add Parentheses · 53 lines
Dinner Plate Stacks · 61 lines
Display Table of Food Orders in a Restaurant · 66 lines
Distance Between Bus Stops · 19 lines
Distant Barcodes · 20 lines
Distinct Echo Substrings · 15 lines
Distinct Subsequences · 22 lines
Distribute Candies · 9 lines
Distribute Candies to People · 18 lines
Distribute Coins in Binary Tree · 15 lines
Distribute Repeating Integers · 21 lines
DI String Match · 12 lines
Divide Array in Sets of K Consecutive Numbers · 35 lines
Divide Array Into Equal Pairs · 9 lines
Divide a String Into Groups of Size k · 20 lines
Divide Two Integers · 19 lines
Divisor Game · 18 lines
Domino and Tromino Tiling · 23 lines
Dota2 Senate · 58 lines
Dungeon Game · 31 lines
Duplicate Zeros · 20 lines
Earliest Possible Day of Full Bloom · 23 lines
Edit Distance · 21 lines
Egg Drop With 2 Eggs and N Floors · 25 lines
Element Appearing More Than 25% In Sorted Array · 52 lines
Eliminate Maximum Number of Monsters · 38 lines
Elimination Game · 19 lines
Encode and Decode TinyURL · 20 lines
Encrypt and Decrypt Strings · 22 lines
Equal Rational Numbers · 13 lines
Equal Row and Column Pairs · 38 lines
Equal Sum Arrays With Minimum Number of Operations · 57 lines
Erect the Fence · 30 lines
Escape The Ghosts · 11 lines
Escape the Spreading Fire · 103 lines
Evaluate Boolean Binary Tree · 11 lines
Evaluate Division · 76 lines
Evaluate Reverse Polish Notation · 40 lines
Evaluate the Bracket Pairs of a String · 7 lines
Even Odd Tree · 44 lines
Exam Room · 71 lines
Excel Sheet Column Number · 18 lines
Excel Sheet Column Title · 16 lines
Exclusive Time of Functions · 24 lines
Execution of All Suffix Instructions Staying in a Grid · 20 lines
Expression Add Operators · 34 lines
Expressive Words · 46 lines
Factorial Trailing Zeroes · 8 lines
Fair Candy Swap · 55 lines
Fair Distribution of Cookies · 25 lines
Fancy Sequence · 65 lines
Fibonacci Number · 26 lines
Filling Bookcase Shelves · 29 lines
Filter Restaurants by Vegan-Friendly, Price and Distance · 40 lines
Final Prices With a Special Discount in a Shop · 15 lines
Final Value of Variable After Performing Operations · 8 lines
Find a Corresponding Node of a Binary Tree in a Clone of That Tree · 19 lines
Find All Anagrams in a String · 39 lines
Find All Duplicates in an Array · 10 lines
Find All Good Strings · 127 lines
Find All Groups of Farmland · 35 lines
Find All K-Distant Indices in an Array · 28 lines
Find All Lonely Numbers in the Array · 17 lines
Find All Numbers Disappeared in an Array · 11 lines
Find All People With Secret · 80 lines
Find All Possible Recipes from Given Supplies · 44 lines
Find And Replace in String · 17 lines
Find and Replace Pattern · 19 lines
Find a Peak Element II · 46 lines
Find Array Given Subset Sums · 43 lines
Find Bottom Left Tree Value · 15 lines
Find Center of Star Graph · 17 lines
Find Closest Node to Given Two Nodes · 28 lines
Find Closest Number to Zero · 40 lines
Find Common Characters · 32 lines
Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree · 102 lines
Find Duplicate File in System · 46 lines
Find Duplicate Subtrees · 16 lines
Find Elements in a Contaminated Binary Tree · 36 lines
Find Eventual Safe States · 23 lines
Find First and Last Position of Element in Sorted Array · 52 lines
Find First Palindromic String in the Array · 7 lines
Find Good Days to Rob the Bank · 25 lines
Find Greatest Common Divisor of Array · 11 lines
Finding MK Average · 88 lines
Finding Pairs With a Certain Sum · 60 lines
Finding the Users Active Minutes · 16 lines
Find in Mountain Array · 53 lines
Find K Closest Elements · 11 lines
Find K Pairs with Smallest Sums · 138 lines
Find Kth Bit in Nth Binary String · 24 lines
Find Kth Largest XOR Coordinate Value · 15 lines
Find K-th Smallest Pair Distance · 25 lines
Find Largest Value in Each Tree Row · 16 lines
Find Latest Group of Size M · 16 lines
Find Longest Awesome Substring · 26 lines
Find Lucky Integer in an Array · 22 lines
Find Median from Data Stream · 47 lines
Find Minimum in Rotated Sorted Array · 4 lines
Find Minimum in Rotated Sorted Array II · 32 lines
Find Minimum Time to Finish All Jobs · 37 lines
Find Missing Observations · 8 lines
Find Mode in Binary Search Tree · 36 lines
Find Nearest Point That Has the Same X or Y Coordinate · 14 lines
Find Numbers with Even Number of Digits · 7 lines
Find N Unique Integers Sum up to Zero · 14 lines
Find Original Array From Doubled Array · 37 lines
Find Palindrome With Fixed Length · 22 lines
Find Peak Element · 41 lines
Find Pivot Index · 21 lines
Find Players With Zero or One Losses · 22 lines
Find Positive Integer Solution for a Given Equation · 34 lines
Find Resultant Array After Removing Anagrams · 31 lines
Find Right Interval · 28 lines
Find Servers That Handled Most Number of Requests · 48 lines
Find Smallest Letter Greater Than Target · 18 lines
Find Subsequence of Length K With the Largest Sum · 8 lines
Find Substring With Given Hash Value · 16 lines
Find Target Indices After Sorting Array · 21 lines
Find the City With the Smallest Number of Neighbors at a Threshold Distance · 37 lines
Find the Closest Palindrome · 61 lines
Find the Difference · 25 lines
Find the Difference of Two Arrays · 9 lines
Find the Distance Value Between Two Arrays · 41 lines
Find the Duplicate Number · 10 lines
Find the Highest Altitude · 12 lines
Find the Kth Largest Integer in the Array · 42 lines
Find the Kth Smallest Sum of a Matrix With Sorted Rows · 30 lines
Find the Longest Substring Containing Vowels in Even Counts · 30 lines
Find the Longest Valid Obstacle Course at Each Position · 26 lines
Find the Middle Index in Array · 10 lines
Find the Minimum and Maximum Number of Nodes Between Critical Points · 39 lines
Find the Minimum Number of Fibonacci Numbers Whose Sum Is K · 19 lines
Find the Most Competitive Subsequence · 16 lines
Find the Shortest Superstring · 76 lines
Find the Smallest Divisor Given a Threshold · 17 lines
Find the Student that Will Replace the Chalk · 13 lines
Find the Town Judge · 39 lines
Find the Winner of an Array Game · 14 lines
Find the Winner of the Circular Game · 15 lines
Find Three Consecutive Integers That Sum to a Given Number · 3 lines
Find Triangular Sum of an Array · 10 lines
Find Two Non-overlapping Sub-arrays Each With Target Sum · 22 lines
Find Unique Binary String · 3 lines
Find Valid Matrix Given Row and Column Sums · 28 lines
Find Winner on a Tic Tac Toe Game · 28 lines
Find Words That Can Be Formed by Characters · 14 lines
Find XOR Sum of All Pairs Bitwise AND · 16 lines
First Bad Version · 38 lines
First Letter to Appear Twice · 15 lines
First Missing Positive · 25 lines
First Unique Character in a String · 26 lines
Fizz Buzz · 19 lines
Flatten a Multilevel Doubly Linked List · 28 lines
Flatten Binary Tree to Linked List · 35 lines
Flatten Nested List Iterator · 70 lines
Flip Binary Tree To Match Preorder Traversal · 17 lines
Flip Columns For Maximum Number of Equal Rows · 26 lines
Flip Equivalent Binary Trees · 23 lines
Flipping an Image · 26 lines
Flip String to Monotone Increasing · 48 lines
Flood Fill · 45 lines
Flower Planting With No Adjacent · 89 lines
Form Array by Concatenating Subarrays of Another Array · 26 lines
Form Largest Integer With Digits That Add up to Target · 17 lines
Four Divisors · 24 lines
Fraction Addition and Subtraction · 20 lines
Fraction to Recurring Decimal · 30 lines
Frequency of the Most Frequent Element · 19 lines
Friends Of Appropriate Ages · 23 lines
Frog Jump · 21 lines
Frog Position After T Seconds · 55 lines
Fruit Into Baskets · 27 lines
Furthest Building You Can Reach · 31 lines
Game of Life · 44 lines
Gas Station · 31 lines
GCD Sort of an Array · 42 lines
Generate a String With Characters That Have Odd Counts · 17 lines
Generate Parentheses · 20 lines
Generate Random Point in a Circle · 13 lines
Get Biggest Three Rhombus Sums in a Grid · 146 lines
Get Equal Substrings Within Budget · 25 lines
Get Maximum in Generated Array · 17 lines
Get the Maximum Score · 36 lines
Get Watched Videos by Your Friends · 43 lines
Goal Parser Interpretation · 3 lines
Goat Latin · 31 lines
Graph Connectivity With Threshold · 93 lines
Gray Code · 31 lines
Greatest Common Divisor of Strings · 21 lines
Greatest English Letter in Upper and Lower Case · 13 lines
Greatest Sum Divisible by Three · 17 lines
Grid Illumination · 58 lines
Group Anagrams · 24 lines
Groups of Special-Equivalent Strings · 16 lines
Group the People Given the Group Size They Belong To · 17 lines
Grumpy Bookstore Owner · 28 lines
Guess Number Higher or Lower · 28 lines
Guess Number Higher or Lower II · 53 lines
Hamming Distance · 17 lines
Hand of Straights · 28 lines
Happy Number · 19 lines
Heaters · 17 lines
Height Checker · 10 lines
H-Index · 7 lines
H-Index II · 33 lines
House Robber · 13 lines
House Robber II · 26 lines
House Robber III · 14 lines
How Many Numbers Are Smaller Than the Current Number · 35 lines
HTML Entity Parser · 40 lines
Implement Magic Dictionary · 36 lines
Implement Queue using Stacks · 41 lines
Implement Rand10() Using Rand7() · 14 lines
Implement Stack using Queues · 41 lines
Implement strStr() · 3 lines
Implement Trie (Prefix Tree) · 68 lines
Increasing Decreasing String · 25 lines
Increasing Order Search Tree · 20 lines
Increasing Subsequences · 19 lines
Increasing Triplet Subsequence · 39 lines
Incremental Memory Leak · 9 lines
Insert Delete GetRandom O(1) · 77 lines
Insert Interval · 35 lines
Insert into a Binary Search Tree · 13 lines
Insertion Sort List · 35 lines
Insufficient Nodes in Root to Leaf Paths · 23 lines
Integer Break · 20 lines
Integer Replacement · 16 lines
Integer to English Words · 89 lines
Integer to Roman · 46 lines
Interleaving String · 21 lines
Intersection of Multiple Arrays · 15 lines
Intersection of Two Arrays · 16 lines
Intersection of Two Arrays II · 32 lines
Intersection of Two Linked Lists · 24 lines
Interval List Intersections · 35 lines
Intervals Between Identical Elements · 31 lines
Invalid Transactions · 23 lines
Invert Binary Tree · 7 lines
IPO · 19 lines
Is Graph Bipartite? · 27 lines
Island Perimeter · 18 lines
Isomorphic Strings · 24 lines
Is Subsequence · 12 lines
Iterator for Combination · 30 lines
Jewels and Stones · 12 lines
Jump Game · 17 lines
Jump Game II · 20 lines
Jump Game III · 21 lines
Jump Game IV · 63 lines
Jump Game V · 33 lines
Jump Game VI · 11 lines
Jump Game VII · 28 lines
K Closest Points to Origin · 28 lines
K-Concatenation Maximum Sum · 12 lines
K-diff Pairs in an Array · 19 lines
K Divisible Elements Subarrays · 41 lines
Keep Multiplying Found Values by Two · 7 lines
Keyboard Row · 57 lines
Keys and Rooms · 18 lines
K Highest Ranked Items Within a Price Range · 72 lines
Kids With the Greatest Number of Candies · 19 lines
K Inverse Pairs Array · 19 lines
Knight Dialer · 20 lines
Knight Probability in Chessboard · 39 lines
Koko Eating Bananas · 26 lines
K Radius Subarray Averages · 15 lines
K-Similar Strings · 45 lines
Kth Ancestor of a Tree Node · 49 lines
Kth Distinct String in an Array · 15 lines
Kth Largest Element in an Array · 94 lines
Kth Largest Element in a Stream · 29 lines
Kth Missing Positive Number · 7 lines
Kth Smallest Element in a BST · 27 lines
Kth Smallest Element in a Sorted Matrix · 5 lines
K-th Smallest in Lexicographical Order · 24 lines
Kth Smallest Number in Multiplication Table · 40 lines
K-th Smallest Prime Fraction · 18 lines
K-th Symbol in Grammar · 18 lines
Largest 1-Bordered Square · 34 lines
Largest 3-Same-Digit Number in String · 11 lines
Largest Combination With Bitwise AND Greater Than Zero · 14 lines
Largest Component Size by Common Factor · 33 lines
Largest Divisible Subset · 57 lines
Largest Magic Square · 53 lines
Largest Merge Of Two Strings · 20 lines
Largest Multiple of Three · 34 lines
Largest Number · 13 lines
Largest Number After Digit Swaps by Parity · 31 lines
Largest Number After Mutating Substring · 19 lines
Largest Number At Least Twice of Others · 19 lines
Largest Odd Number in String · 9 lines
Largest Palindrome Product · 22 lines
Largest Perimeter Triangle · 23 lines
Largest Plus Sign · 45 lines
Largest Rectangle in Histogram · 49 lines
Largest Submatrix With Rearrangements · 28 lines
Largest Substring Between Two Equal Characters · 12 lines
Largest Sum of Averages · 42 lines
Largest Time for Given Digits · 20 lines
Largest Triangle Area · 27 lines
Largest Values From Labels · 37 lines
Last Day Where You Can Still Cross · 45 lines
Last Moment Before All Ants Fall Out of a Plank · 6 lines
Last Stone Weight · 12 lines
Last Stone Weight II · 11 lines
Last Substring in Lexicographical Order · 41 lines
Latest Time by Replacing Hidden Digits · 8 lines
Leaf-Similar Trees · 48 lines
Least Number of Unique Integers after K Removals · 45 lines
Lemonade Change · 32 lines
Length of Last Word · 12 lines
Length of Longest Fibonacci Subsequence · 20 lines
Letter Case Permutation · 27 lines
Letter Combinations of a Phone Number · 30 lines
Letter Tile Possibilities · 36 lines
Lexicographically Smallest String After Applying Operations · 62 lines
Lexicographical Numbers · 27 lines
LFU Cache · 78 lines
License Key Formatting · 12 lines
Linked List Components · 19 lines
Linked List Cycle · 27 lines
Linked List Cycle II · 23 lines
Linked List in Binary Tree · 12 lines
Linked List Random Node · 18 lines
Logical OR of Two Binary Grids Represented as Quad-Trees · 32 lines
Longer Contiguous Segments of Ones than Zeros · 22 lines
Longest Absolute File Path · 32 lines
Longest Arithmetic Subsequence · 20 lines
Longest Arithmetic Subsequence of Given Difference · 11 lines
Longest Binary Subsequence Less Than or Equal to K · 24 lines
Longest Chunked Palindrome Decomposition · 15 lines
Longest Common Prefix · 13 lines
Longest Common Subsequence · 41 lines
Longest Consecutive Sequence · 32 lines
Longest Continuous Increasing Subsequence · 14 lines
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit · 37 lines
Longest Cycle in a Graph · 95 lines
Longest Happy Prefix · 27 lines
Longest Happy String · 40 lines
Longest Harmonious Subsequence · 23 lines
Longest Ideal Subsequence · 16 lines
Longest Increasing Path in a Matrix · 39 lines
Longest Increasing Subsequence · 14 lines
Longest Mountain in Array · 39 lines
Longest Nice Substring · 22 lines
Longest Palindrome · 21 lines
Longest Palindrome by Concatenating Two Letter Words · 43 lines
Longest Palindromic Subsequence · 19 lines
Longest Palindromic Substring · 46 lines
Longest Path With Different Adjacent Characters · 42 lines
Longest Repeating Character Replacement · 28 lines
Longest String Chain · 43 lines
Longest Subarray of 1's After Deleting One Element · 25 lines
Longest Subsequence Repeated k Times · 74 lines
Longest Substring Of All Vowels in Order · 28 lines
Longest Substring with At Least K Repeating Characters · 34 lines
Longest Substring Without Repeating Characters · 19 lines
Longest Turbulent Subarray · 18 lines
Longest Uncommon Subsequence I · 4 lines
Longest Uncommon Subsequence II · 27 lines
Longest Univalue Path · 15 lines
Longest Valid Parentheses · 22 lines
Longest Well-Performing Interval · 16 lines
Longest Word in Dictionary · 20 lines
Longest Word in Dictionary through Deleting · 30 lines
Longest ZigZag Path in a Binary Tree · 41 lines
Long Pressed Name · 11 lines
Loud and Rich · 31 lines
Lowest Common Ancestor of a Binary Search Tree · 11 lines
Lowest Common Ancestor of a Binary Tree · 8 lines
Lowest Common Ancestor of Deepest Leaves · 23 lines
LRU Cache · 46 lines
Lucky Numbers in a Matrix · 23 lines
Magical String · 13 lines
Magic Squares In Grid · 23 lines
Magnetic Force Between Two Balls · 36 lines
Majority Element · 23 lines
Majority Element II · 19 lines
Make Array Zero by Subtracting Equal Amounts · 4 lines
Make Sum Divisible by P · 27 lines
Make The String Great · 26 lines
Make Two Arrays Equal by Reversing Sub-arrays · 30 lines
Making A Large Island · 118 lines
Making File Names Unique · 29 lines
Map of Highest Peak · 38 lines
Map Sum Pairs · 23 lines
Masking Personal Information · 31 lines
Matchsticks to Square · 27 lines
Match Substring After Replacement · 56 lines
Matrix Block Sum · 56 lines
Matrix Cells in Distance Order · 35 lines
Matrix Diagonal Sum · 14 lines
Max Area of Island · 27 lines
Max Chunks To Make Sorted · 9 lines
Max Chunks To Make Sorted II · 22 lines
Max Consecutive Ones · 14 lines
Max Consecutive Ones III · 30 lines
Max Difference You Can Get From Changing an Integer · 24 lines
Max Dot Product of Two Subsequences · 29 lines
Maximal Network Rank · 27 lines
Maximal Rectangle · 43 lines
Maximal Square · 16 lines
Maximize Distance to Closest Person · 19 lines
Maximize Number of Subsequences in a String · 30 lines
Maximize Score After N Operations · 33 lines
Maximize Sum Of Array After K Negations · 41 lines
Maximize the Confusion of an Exam · 16 lines
Maximize the Topmost Element After K Moves · 22 lines
Maximum 69 Number · 14 lines
Maximum Absolute Sum of Any Subarray · 15 lines
Maximum AND Sum of Array · 30 lines
Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts · 22 lines
Maximum Ascending Subarray Sum · 8 lines
Maximum Average Pass Ratio · 124 lines
Maximum Average Subarray I · 22 lines
Maximum Bags With Full Capacity of Rocks · 25 lines
Maximum Binary String After Change · 40 lines
Maximum Binary Tree · 9 lines
Maximum Binary Tree II · 25 lines
Maximum Building Height · 38 lines
Maximum Candies Allocated to K Children · 28 lines
Maximum Candies You Can Get from Boxes · 40 lines
Maximum Compatibility Score Sum · 42 lines
Maximum Consecutive Floors Without Special Floors · 16 lines
Maximum Depth of Binary Tree · 10 lines
Maximum Depth of N-ary Tree · 33 lines
Maximum Difference Between Increasing Elements · 9 lines
Maximum Difference Between Node and Ancestor · 13 lines
Maximum Distance Between a Pair of Values · 21 lines
Maximum Earnings From Taxi · 45 lines
Maximum Element After Decreasing and Rearranging · 12 lines
Maximum Employees to Be Invited to a Meeting · 126 lines
Maximum Equal Frequency · 49 lines
Maximum Erasure Value · 11 lines
Maximum Frequency Stack · 65 lines
Maximum Fruits Harvested After at Most K Steps · 39 lines
Maximum Gap · 73 lines
Maximum Genetic Difference Query · 60 lines
Maximum Ice Cream Bars · 14 lines
Maximum Length of a Concatenated String with Unique Characters · 33 lines
Maximum Length of Pair Chain · 34 lines
Maximum Length of Repeated Subarray · 17 lines
Maximum Length of Subarray With Positive Product · 50 lines
Maximum Level Sum of a Binary Tree · 29 lines
Maximum Matrix Sum · 24 lines
Maximum Nesting Depth of the Parentheses · 12 lines
Maximum Nesting Depth of Two Valid Parentheses Strings · 11 lines
Maximum Non Negative Product in a Matrix · 25 lines
Maximum Number of Achievable Transfer Requests · 28 lines
Maximum Number of Balloons · 34 lines
Maximum Number of Balls in a Box · 12 lines
Maximum Number of Coins You Can Get · 14 lines
Maximum Number of Consecutive Values You Can Make · 9 lines
Maximum Number of Eaten Apples · 28 lines
Maximum Number of Events That Can Be Attended · 113 lines
Maximum Number of Events That Can Be Attended II · 28 lines
Maximum Number of Groups Entering a Competition · 6 lines
Maximum Number of Groups Getting Fresh Donuts · 1 lines
Maximum Number of Non-Overlapping Subarrays With Sum Equals Target · 16 lines
Maximum Number of Occurrences of a Substring · 46 lines
Maximum Number of Pairs in Array · 17 lines
Maximum Number of Points with Cost · 21 lines
Maximum Number of Removable Characters · 39 lines
Maximum Number of Tasks You Can Assign · 32 lines
Maximum Number of Visible Points · 38 lines
Maximum Number of Vowels in a Substring of Given Length · 27 lines
Maximum Number of Ways to Partition an Array · 36 lines
Maximum Number of Weeks for Which You Can Work · 16 lines
Maximum Number of Words Found in Sentences · 16 lines
Maximum Number of Words You Can Type · 16 lines
Maximum of Absolute Value Expression · 21 lines
Maximum Path Quality of a Graph · 31 lines
Maximum Performance of a Team · 15 lines
Maximum Points in an Archery Competition · 33 lines
Maximum Points You Can Obtain from Cards · 29 lines
Maximum Population Year · 18 lines
Maximum Product After K Increments · 28 lines
Maximum Product Difference Between Two Pairs · 7 lines
Maximum Product of Splitted Binary Tree · 43 lines
Maximum Product of the Length of Two Palindromic Subsequences · 47 lines
Maximum Product of Three Numbers · 9 lines
Maximum Product of Two Elements in an Array · 9 lines
Maximum Product of Word Lengths · 34 lines
Maximum Product Subarray · 18 lines
Maximum Profit in Job Scheduling · 74 lines
Maximum Repeating Substring · 8 lines
Maximum Running Time of N Computers · 16 lines
Maximum Score After Splitting a String · 27 lines
Maximum Score from Performing Multiplication Operations · 36 lines
Maximum Score From Removing Stones · 37 lines
Maximum Score From Removing Substrings · 35 lines
Maximum Score of a Good Subarray · 48 lines
Maximum Score Words Formed by Letters · 55 lines
Maximum Side Length of a Square with Sum Less than or Equal to Threshold · 53 lines
Maximum Split of Positive Even Integers · 18 lines
Maximum Students Taking Exam · 82 lines
Maximum Subarray · 16 lines
Maximum Subarray Min-Product · 31 lines
Maximum Subarray Sum with One Deletion · 32 lines
Maximum Sum BST in Binary Tree · 55 lines
Maximum Sum Circular Subarray · 48 lines
Maximum Sum Obtained of Any Permutation · 21 lines
Maximum Sum of Two Non-Overlapping Subarrays · 37 lines
Maximum Swap · 15 lines
Maximum Total Importance of Roads · 36 lines
Maximum Trailing Zeros in a Cornered Path · 94 lines
Maximum Twin Sum of a Linked List · 16 lines
Maximum Value after Insertion · 37 lines
Maximum Value at a Given Index in a Bounded Array · 28 lines
Maximum Value of K Coins From Piles · 26 lines
Maximum White Tiles Covered by a Carpet · 29 lines
Maximum Width of Binary Tree · 47 lines
Maximum Width Ramp · 22 lines
Maximum XOR After Operations · 7 lines
Maximum XOR for Each Query · 13 lines
Maximum XOR of Two Numbers in an Array · 36 lines
Max Increase to Keep City Skyline · 30 lines
Max Number of K-Sum Pairs · 12 lines
Max Points on a Line · 56 lines
Max Sum of a Pair With Equal Sum of Digits · 22 lines
Max Sum of Rectangle No Larger Than K · 36 lines
Max Value of Equation · 17 lines
Mean of Array After Removing Some Elements · 8 lines
Median of Two Sorted Arrays · 37 lines
Merge BSTs to Create Single BST · 52 lines
Merge In Between Linked Lists · 20 lines
Merge Intervals · 28 lines
Merge k Sorted Lists · 26 lines
Merge Nodes in Between Zeros · 17 lines
Merge Similar Items · 20 lines
Merge Sorted Array · 26 lines
Merge Strings Alternately · 14 lines
Merge Triplets to Form Target Triplet · 20 lines
Merge Two Binary Trees · 22 lines
Merge Two Sorted Lists · 50 lines
Middle of the Linked List · 9 lines
Min Cost Climbing Stairs · 18 lines
Min Cost to Connect All Points · 49 lines
Minesweeper · 40 lines
Minimize Deviation in Array · 13 lines
Minimized Maximum of Products Distributed to Any Store · 41 lines
Minimize Hamming Distance After Swap Operations · 71 lines
Minimize Malware Spread · 69 lines
Minimize Malware Spread II · 51 lines
Minimize Maximum Pair Sum in Array · 12 lines
Minimize Result by Adding Parentheses to Expression · 26 lines
Minimize the Difference Between Target and Chosen Elements · 36 lines
Minimum Absolute Difference · 18 lines
Minimum Absolute Difference in BST · 19 lines
Minimum Absolute Difference Queries · 36 lines
Minimum Absolute Sum Difference · 53 lines
Minimum Add to Make Parentheses Valid · 17 lines
Minimum Adjacent Swaps to Reach the Kth Smallest Number · 65 lines
Minimum Amount of Time to Fill Cups · 16 lines
Minimum Area Rectangle · 38 lines
Minimum Area Rectangle II · 42 lines
Minimum ASCII Delete Sum for Two Strings · 25 lines
Minimum Average Difference · 32 lines
Minimum Bit Flips to Convert Number · 3 lines
Minimum Changes To Make Alternating Binary String · 27 lines
Minimum Consecutive Cards to Pick Up · 14 lines
Minimum Cost For Tickets · 21 lines
Minimum Cost Homecoming of a Robot in a Grid · 22 lines
Minimum Cost of Buying Candies With Discount · 20 lines
Minimum Cost to Cut a Stick · 28 lines
Minimum Cost to Hire K Workers · 27 lines
Minimum Cost to Make at Least One Valid Path in a Grid · 36 lines
Minimum Cost to Move Chips to The Same Position · 14 lines
Minimum Cost to Set Cooking Time · 51 lines
Minimum Cost Tree From Leaf Values · 36 lines
Minimum Degree of a Connected Trio in a Graph · 35 lines
Minimum Deletions to Make Array Beautiful · 16 lines
Minimum Deletions to Make Array Divisible · 23 lines
Minimum Deletions to Make Character Frequencies Unique · 25 lines
Minimum Deletions to Make String Balanced · 26 lines
Minimum Depth of Binary Tree · 15 lines
Minimum Difference Between Highest and Lowest of K Scores · 16 lines
Minimum Difference Between Largest and Smallest Value in Three Moves · 13 lines
Minimum Difference in Sums After Removal of Elements · 140 lines
Minimum Difficulty of a Job Schedule · 60 lines
Minimum Distance Between BST Nodes · 24 lines
Minimum Distance to the Target Element · 9 lines
Minimum Distance to Type a Word Using Two Fingers · 29 lines
Minimum Domino Rotations For Equal Row · 25 lines
Minimum Falling Path Sum · 131 lines
Minimum Falling Path Sum II · 71 lines
Minimum Flips to Make a OR b Equal to c · 18 lines
Minimum Garden Perimeter to Collect Enough Apples · 28 lines
Minimum Genetic Mutation · 56 lines
Minimum Height Trees · 43 lines
Minimum Incompatibility · 100 lines
Minimum Increment to Make Array Unique · 18 lines
Minimum Index Sum of Two Lists · 17 lines
Minimum Initial Energy to Finish Tasks · 16 lines
Minimum Insertion Steps to Make a String Palindrome · 17 lines
Minimum Insertions to Balance a Parentheses String · 21 lines
Minimum Jumps to Reach Home · 27 lines
Minimum Length of String After Deleting Similar Ends · 18 lines
Minimum Limit of Balls in a Bag · 17 lines
Minimum Lines to Represent a Line Chart · 17 lines
Minimum Moves to Convert String · 17 lines
Minimum Moves to Equal Array Elements · 24 lines
Minimum Moves to Equal Array Elements II · 18 lines
Minimum Moves to Move a Box to Their Target Location · 132 lines
Minimum Moves to Reach Target Score · 17 lines
Minimum Moves to Reach Target with Rotations · 70 lines
Minimum Non-Zero Product of the Array Elements · 24 lines
Minimum Number of Arrows to Burst Balloons · 23 lines
Minimum Number of Buckets Required to Collect Rainwater from Houses · 26 lines
Minimum Number of Days to Disconnect Island · 80 lines
Minimum Number of Days to Eat N Oranges · 22 lines
Minimum Number of Days to Make m Bouquets · 47 lines
Minimum Number of Flips to Convert Binary Matrix to Zero Matrix · 57 lines
Minimum Number of Flips to Make the Binary String Alternating · 43 lines
Minimum Number of Frogs Croaking · 38 lines
Minimum Number of Increments on Subarrays to Form a Target Array · 10 lines
Minimum Number of K Consecutive Bit Flips · 14 lines
Minimum Number of Moves to Seat Everyone · 8 lines
Minimum Number of Operations to Convert Time · 15 lines
Minimum Number of Operations to Move All Balls to Each Box · 21 lines
Minimum Number of Operations to Reinitialize a Permutation · 11 lines
Minimum Number of Refueling Stops · 26 lines
Minimum Number of Removals to Make Mountain Array · 32 lines
Minimum Number of Steps to Make Two Strings Anagram · 30 lines
Minimum Number of Steps to Make Two Strings Anagram II · 11 lines
Minimum Number of Swaps to Make the Binary String Alternating · 27 lines
Minimum Number of Swaps to Make the String Balanced · 12 lines
Minimum Number of Taps to Open to Water a Garden · 50 lines
Minimum Number of Vertices to Reach All Nodes · 21 lines
Minimum Number of Work Sessions to Finish the Tasks · 39 lines
Minimum Numbers of Function Calls to Make Target Array · 14 lines
Minimum Obstacle Removal to Reach Corner · 54 lines
Minimum One Bit Operations to Make Integers Zero · 18 lines
Minimum Operations to Halve Array Sum · 28 lines
Minimum Operations to Make Array Equal · 13 lines
Minimum Operations to Make a Subsequence · 32 lines
Minimum Operations to Make a Uni-Value Grid · 22 lines
Minimum Operations to Make the Array Alternating · 67 lines
Minimum Operations to Make the Array Increasing · 13 lines
Minimum Operations to Reduce X to Zero · 13 lines
Minimum Path Cost in a Grid · 31 lines
Minimum Path Sum · 17 lines
Minimum Possible Integer After at Most K Adjacent Swaps On Digits · 52 lines
Minimum Remove to Make Valid Parentheses · 25 lines
Minimum Replacements to Sort the Array · 16 lines
Minimum Rounds to Complete All Tasks · 15 lines
Minimum Score Triangulation of Polygon · 18 lines
Minimum Sideway Jumps · 84 lines
Minimum Size Subarray Sum · 25 lines
Minimum Skips to Arrive at Meeting On Time · 55 lines
Minimum Space Wasted From Packaging · 76 lines
Minimum Speed to Arrive on Time · 24 lines
Minimum Subsequence in Non-Increasing Order · 14 lines
Minimum Suffix Flips · 5 lines
Minimum Sum of Four Digit Number After Splitting Digits · 9 lines
Minimum Sum of Squared Difference · 25 lines
Minimum Swaps to Arrange a Binary Grid · 31 lines
Minimum Swaps to Group All 1's Together II · 28 lines
Minimum Swaps To Make Sequences Increasing · 20 lines
Minimum Swaps to Make Strings Equal · 21 lines
Minimum Time Difference · 19 lines
Minimum Time to Collect All Apples in a Tree · 39 lines
Minimum Time to Complete Trips · 25 lines
Minimum Time to Finish the Race · 30 lines
Minimum Time to Make Rope Colorful · 18 lines
Minimum Time to Type Word Using Special Typewriter · 17 lines
Minimum Time Visiting All Points · 14 lines
Minimum Total Space Wasted With K Resizing Operations · 42 lines
Minimum Value to Get Positive Step by Step Sum · 14 lines
Minimum White Tiles After Covering With Carpets · 35 lines
Minimum Window Substring · 44 lines
Mini Parser · 29 lines
Min Max Game · 14 lines
Min Stack · 29 lines
Mirror Reflection · 18 lines
Missing Number · 3 lines
Monotone Increasing Digits · 10 lines
Monotonic Array · 13 lines
Most Beautiful Item for Each Query · 29 lines
Most Common Word · 13 lines
Most Frequent Number Following Key In an Array · 24 lines
Most Frequent Subtree Sum · 18 lines
Most Profit Assigning Work · 44 lines
Most Stones Removed with Same Row or Column · 47 lines
Most Visited Sector in a Circular Track · 15 lines
Move Pieces to Obtain a String · 26 lines
Move Zeroes · 17 lines
Moving Stones Until Consecutive · 14 lines
Multiply Strings · 51 lines
My Calendar I · 12 lines
My Calendar II · 23 lines
My Calendar III · 65 lines
Naming a Company · 50 lines
N-ary Tree Level Order Traversal · 20 lines
N-ary Tree Postorder Traversal · 12 lines
N-ary Tree Preorder Traversal · 5 lines
Nearest Exit from Entrance in Maze · 35 lines
Network Delay Time · 69 lines
New 21 Game · 27 lines
Next Greater Element I · 41 lines
Next Greater Element II · 20 lines
Next Greater Element III · 27 lines
Next Greater Node In Linked List · 27 lines
Next Greater Numerically Balanced Number · 21 lines
Next Permutation · 40 lines
Nim Game · 4 lines
Non-decreasing Array · 13 lines
Non-negative Integers without Consecutive Ones · 23 lines
Non-overlapping Intervals · 17 lines
N-Queens · 61 lines
N-Queens II · 43 lines
N-Repeated Element in Size 2N Array · 9 lines
Nth Digit · 16 lines
Nth Magical Number · 38 lines
N-th Tribonacci Number · 31 lines
Number Complement · 3 lines
Number of 1 Bits · 13 lines
Number of Arithmetic Triplets · 15 lines
Number of Atoms · 54 lines
Number of Boomerangs · 21 lines
Number of Burgers with No Waste of Ingredients · 10 lines
Number of Closed Islands · 52 lines
Number of Days Between Two Dates · 6 lines
Number of Dice Rolls With Target Sum · 20 lines
Number of Different Integers in a String · 21 lines
Number of Digit One · 11 lines
Number of Distinct Roll Sequences · 29 lines
Number of Enclaves · 41 lines
Number of Equivalent Domino Pairs · 17 lines
Number of Excellent Pairs · 30 lines
Number of Flowers in Full Bloom · 72 lines
Number of Good Leaf Nodes Pairs · 80 lines
Number of Good Pairs · 13 lines
Number of Good Ways to Split a String · 22 lines
Number of Increasing Paths in a Grid · 29 lines
Number of Islands · 54 lines
Number of Laser Beams in a Bank · 11 lines
Number of Lines To Write String · 16 lines
Number of Longest Increasing Subsequence · 23 lines
Number of Matching Subsequences · 21 lines
Number of Music Playlists · 22 lines
Number of Nodes in the Sub-Tree With the Same Label · 39 lines
Number of Operations to Make Network Connected · 32 lines
Number of Orders in the Backlog · 126 lines
Number of Pairs of Interchangeable Rectangles · 28 lines
Number of Pairs of Strings With Concatenation Equal to Target · 21 lines
Number of Paths with Max Score · 30 lines
Number of People Aware of a Secret · 34 lines
Number of Provinces · 47 lines
Number of Recent Calls · 11 lines
Number Of Rectangles That Can Form The Largest Square · 15 lines
Number of Restricted Paths From First to Last Node · 118 lines
Number of Segments in a String · 12 lines
Number of Sets of K Non-Overlapping Line Segments · 10 lines
Number of Smooth Descent Periods of a Stock · 23 lines
Number of Steps to Reduce a Number in Binary Representation to One · 22 lines
Number of Steps to Reduce a Number to Zero · 16 lines
Number of Strings That Appear as Substrings in Word · 18 lines
Number of Students Doing Homework at a Given Time · 9 lines
Number of Students Unable to Eat Lunch · 9 lines
Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold · 22 lines
Number of Subarrays with Bounded Maximum · 13 lines
Number of Sub-arrays With Odd Sum · 13 lines
Number of Submatrices That Sum to Target · 25 lines
Number of Subsequences That Satisfy the Given Sum Condition · 23 lines
Number of Substrings Containing All Three Characters · 22 lines
Number of Substrings With Only 1s · 8 lines
Number of Times Binary String Is Prefix-Aligned · 20 lines
Number of Unique Good Subsequences · 16 lines
Number of Valid Words for Each Puzzle · 34 lines
Number of Valid Words in a Sentence · 16 lines
Number of Visible People in a Queue · 22 lines
Number of Ways of Cutting a Pizza · 70 lines
Number of Ways to Arrive at Destination · 108 lines
Number of Ways to Buy Pens and Pencils · 11 lines
Number of Ways to Form a Target String Given a Dictionary · 49 lines
Number of Ways to Paint N × 3 Grid · 17 lines
Number of Ways to Reorder Array to Get Same BST · 37 lines
Number of Ways to Select Buildings · 18 lines
Number of Ways to Separate Numbers · 48 lines
Number of Ways to Split Array · 18 lines
Number of Ways to Split a String · 14 lines
Number of Ways to Stay in the Same Place After Some Steps · 18 lines
Number of Ways Where Square of Number Is Equal to Product of Two Numbers · 37 lines
Number of Wonderful Substrings · 35 lines
Number of Zero-Filled Subarrays · 21 lines
Numbers At Most N Given Digit Set · 27 lines
Numbers With Same Consecutive Differences · 36 lines
Occurrences After Bigram · 8 lines
Odd Even Jump · 100 lines
Odd Even Linked List · 26 lines
Ones and Zeroes · 32 lines
Online Election · 34 lines
Online Majority Element In Subarray · 30 lines
Online Stock Span · 32 lines
Open the Lock · 53 lines
Operations on Tree · 71 lines
Optimal Division · 11 lines
Orderly Queue · 29 lines
Out of Boundary Paths · 29 lines
Pacific Atlantic Water Flow · 52 lines
Paint House III · 35 lines
Painting a Grid With Three Different Colors · 36 lines
Pairs of Songs With Total Durations Divisible by 60 · 14 lines
Palindrome Linked List · 45 lines
Palindrome Number · 13 lines
Palindrome Pairs · 31 lines
Palindrome Partitioning · 27 lines
Palindrome Partitioning II · 23 lines
Palindrome Partitioning III · 35 lines
Palindrome Partitioning IV · 52 lines
Palindromic Substrings · 31 lines
Pancake Sorting · 20 lines
Parallel Courses III · 45 lines
Parse Lisp Expression · 41 lines
Parsing A Boolean Expression · 29 lines
Partition Array According to Given Pivot · 35 lines
Partition Array for Maximum Sum · 38 lines
Partition Array into Disjoint Intervals · 22 lines
Partition Array Into Three Parts With Equal Sum · 21 lines
Partition Array Into Two Arrays to Minimize Sum Difference · 63 lines
Partition Array Such That Maximum Difference Is K · 21 lines
Partition Equal Subset Sum · 20 lines
Partition Labels · 28 lines
Partition List · 25 lines
Partition to K Equal Sum Subsets · 25 lines
Pascal's Triangle · 13 lines
Pascal's Triangle II · 18 lines
Patching Array · 27 lines
Path Crossing · 20 lines
Path In Zigzag Labelled Binary Tree · 38 lines
Path Sum · 16 lines
Path Sum II · 17 lines
Path Sum III · 11 lines
Path with Maximum Gold · 42 lines
Path with Maximum Probability · 41 lines
Path With Minimum Effort · 110 lines
Peak Index in a Mountain Array · 19 lines
Peeking Iterator · 18 lines
People Whose List of Favorite Companies Is Not a Subset of Another List · 20 lines
Percentage of Letter in String · 8 lines
Perfect Number · 14 lines
Perfect Rectangle · 35 lines
Perfect Squares · 13 lines
Permutation in String · 32 lines
Permutations · 21 lines
Permutation Sequence · 31 lines
Permutations II · 34 lines
Pizza With 3n Slices · 33 lines
Plates Between Candles · 37 lines
Plus One · 12 lines
Poor Pigs · 18 lines
Populating Next Right Pointers in Each Node · 30 lines
Populating Next Right Pointers in Each Node II · 34 lines
Positions of Large Groups · 11 lines
Possible Bipartition · 36 lines
Powerful Integers · 11 lines
Power of Four · 13 lines
Power of Three · 17 lines
Power of Two · 7 lines
Pow(x, n) · 3 lines
Predict the Winner · 21 lines
Previous Permutation With One Swap · 25 lines
Prime Arrangements · 44 lines
Prime Number of Set Bits in Binary Representation · 15 lines
Prime Palindrome · 42 lines
Print Binary Tree · 39 lines
Print Words Vertically · 21 lines
Prison Cells After N Days · 51 lines
Probability of a Two Boxes Having The Same Number of Distinct Balls · 80 lines
Process Restricted Friend Requests · 66 lines
Process Tasks Using Servers · 30 lines
Product of Array Except Self · 20 lines
Product of the Last K Numbers · 19 lines
Projection Area of 3D Shapes · 18 lines
Pseudo-Palindromic Paths in a Binary Tree · 16 lines
Push Dominoes · 16 lines
Pyramid Transition Matrix · 43 lines
Queens That Can Attack the King · 29 lines
Queries on a Permutation With Key · 15 lines
Queries on Number of Points Inside a Circle · 17 lines
Queue Reconstruction by Height · 19 lines
Rabbits in Forest · 18 lines
Race Car · 34 lines
Random Flip Matrix · 29 lines
Random Pick Index · 16 lines
Random Pick with Blacklist · 32 lines
Random Pick with Weight · 34 lines
Random Point in Non-overlapping Rectangles · 66 lines
Range Addition II · 10 lines
Range Frequency Queries · 44 lines
Range Module · 113 lines
Range Sum of BST · 17 lines
Range Sum of Sorted Subarray Sums · 88 lines
Range Sum Query 2D - Immutable · 62 lines
Range Sum Query - Immutable · 9 lines
Range Sum Query - Mutable · 40 lines
Rank Teams by Votes · 26 lines
Rank Transform of a Matrix · 57 lines
Rank Transform of an Array · 24 lines
Ransom Note · 13 lines
Reachable Nodes In Subdivided Graph · 48 lines
Reachable Nodes With Restrictions · 44 lines
Reach a Number · 18 lines
Reaching Points · 22 lines
Rearrange Array Elements by Sign · 22 lines
Rearrange Characters to Make Target String · 23 lines
Rearrange Spaces Between Words · 12 lines
Rearrange Words in a Sentence · 9 lines
Reconstruct a 2-Row Binary Matrix · 44 lines
Reconstruct Itinerary · 41 lines
Reconstruct Original Digits from English · 116 lines
Recover a Tree From Preorder Traversal · 31 lines
Recover Binary Search Tree · 21 lines
Rectangle Area · 11 lines
Rectangle Area II · 49 lines
Rectangle Overlap · 16 lines
Redistribute Characters to Make All Strings Equal · 20 lines
Reduce Array Size to The Half · 13 lines
Reduction Operations to Make the Array Elements Equal · 11 lines
Redundant Connection · 15 lines
Reformat Date · 36 lines
Reformat Phone Number · 12 lines
Reformat The String · 25 lines
Regions Cut By Slashes · 64 lines
Regular Expression Matching · 10 lines
Relative Ranks · 17 lines
Relative Sort Array · 19 lines
Remove All Adjacent Duplicates in String II · 24 lines
Remove All Occurrences of a Substring · 27 lines
Remove Colored Pieces if Both Neighbors are the Same Color · 30 lines
Remove Comments · 40 lines
Remove Covered Intervals · 12 lines
Remove Digit From Number to Maximize Result · 18 lines
Remove Duplicate Letters · 32 lines
Remove Duplicates from Sorted Array · 9 lines
Remove Duplicates from Sorted Array II · 9 lines
Remove Duplicates from Sorted List · 21 lines
Remove Duplicates from Sorted List II · 19 lines
Remove Element · 9 lines
Remove Invalid Parentheses · 37 lines
Remove K Digits · 21 lines
Remove Linked List Elements · 31 lines
Remove Max Number of Edges to Keep Graph Fully Traversable · 64 lines
Remove Nth Node From End of List · 19 lines
Remove One Element to Make the Array Strictly Increasing · 12 lines
Remove Outermost Parentheses · 18 lines
Remove Palindromic Subsequences · 4 lines
Remove Stones to Minimize the Total · 95 lines
Remove Sub-Folders from the Filesystem · 10 lines
Remove Zero Sum Consecutive Nodes from Linked List · 27 lines
Removing Minimum and Maximum From Array · 61 lines
Removing Minimum Number of Magic Beans · 20 lines
Reorder Data in Log Files · 33 lines
Reordered Power of 2 · 13 lines
Reorder List · 73 lines
Reorder Routes to Make All Paths Lead to the City Zero · 54 lines
Reorganize String · 36 lines
Repeated DNA Sequences · 11 lines
Repeated String Match · 8 lines
Repeated Substring Pattern · 5 lines
Replace All Digits with Characters · 11 lines
Replace All ?'s to Avoid Consecutive Repeating Characters · 15 lines
Replace Elements in an Array · 31 lines
Replace Elements with Greatest Element on Right Side · 16 lines
Replace Non-Coprime Numbers in Array · 22 lines
Replace the Substring for Balanced String · 61 lines
Replace Words · 81 lines
Reshape the Matrix · 20 lines
Restore IP Addresses · 37 lines
Restore The Array · 34 lines
Reveal Cards In Increasing Order · 9 lines
Reverse Bits · 11 lines
Reverse Integer · 10 lines
Reverse Linked List · 11 lines
Reverse Linked List II · 36 lines
Reverse Nodes in Even Length Groups · 60 lines
Reverse Nodes in k-Group · 20 lines
Reverse Only Letters · 27 lines
Reverse Pairs · 52 lines
Reverse Prefix of Word · 9 lines
Reverse String · 6 lines
Reverse String II · 29 lines
Reverse Substrings Between Each Pair of Parentheses · 23 lines
Reverse Vowels of a String · 18 lines
Reverse Words in a String · 7 lines
Reverse Words in a String III · 18 lines
Richest Customer Wealth · 11 lines
Rings and Rods · 11 lines
RLE Iterator · 27 lines
Robot Bounded In Circle · 29 lines
Robot Return to Origin · 21 lines
Roman to Integer · 27 lines
Root Equals Sum of Children · 3 lines
Rotate Array · 11 lines
Rotated Digits · 15 lines
Rotate Function · 16 lines
Rotate Image · 14 lines
Rotate List · 29 lines
Rotate String · 8 lines
Rotating the Box · 34 lines
Rotting Oranges · 70 lines
Running Sum of 1d Array · 17 lines
Russian Doll Envelopes · 34 lines
Same Tree · 18 lines
Satisfiability of Equality Equations · 30 lines
Score After Flipping Matrix · 32 lines
Score of Parentheses · 17 lines
Scramble String · 56 lines
Search a 2D Matrix · 25 lines
Search a 2D Matrix II · 28 lines
Search in a Binary Search Tree · 19 lines
Search in Rotated Sorted Array · 32 lines
Search in Rotated Sorted Array II · 5 lines
Search Insert Position · 23 lines
Search Suggestions System · 94 lines
Seat Reservation Manager · 38 lines
Second Largest Digit in a String · 22 lines
Second Minimum Node In a Binary Tree · 19 lines
Self Crossing · 21 lines
Self Dividing Numbers · 29 lines
Sell Diminishing-Valued Colored Balls · 30 lines
Selling Pieces of Wood · 26 lines
Sender With Largest Word Count · 25 lines
Sentence Similarity III · 1 lines
Sequential Digits · 19 lines
Sequentially Ordinal Rank Tracker · 230 lines
Serialize and Deserialize Binary Tree · 43 lines
Serialize and Deserialize BST · 79 lines
Set Intersection Size At Least Two · 28 lines
Set Matrix Zeroes · 22 lines
Set Mismatch · 22 lines
Shift 2D Grid · 31 lines
Shifting Letters · 12 lines
Shopping Offers · 74 lines
Short Encoding of Words · 50 lines
Shortest Bridge · 58 lines
Shortest Common Supersequence · 64 lines
Shortest Completing Word · 32 lines
Shortest Distance to a Character · 20 lines
Shortest Impossible Sequence of Rolls · 13 lines
Shortest Palindrome · 21 lines
Shortest Path in a Grid with Obstacles Elimination · 37 lines
Shortest Path in Binary Matrix · 69 lines
Shortest Path to Get All Keys · 127 lines
Shortest Path Visiting All Nodes · 35 lines
Shortest Path with Alternating Colors · 56 lines
Shortest Subarray to be Removed to Make Array Sorted · 48 lines
Shortest Subarray with Sum at Least K · 95 lines
Shortest Unsorted Continuous Subarray · 11 lines
Shuffle an Array · 22 lines
Shuffle String · 11 lines
Shuffle the Array · 6 lines
Sign of the Product of an Array · 10 lines
Similar String Groups · 43 lines
Simple Bank System · 59 lines
Simplified Fractions · 24 lines
Simplify Path · 21 lines
Single Element in a Sorted Array · 18 lines
Single Number · 12 lines
Single Number II · 15 lines
Single Number III · 13 lines
Single-Threaded CPU · 42 lines
Sliding Puzzle · 81 lines
Sliding Window Maximum · 35 lines
Sliding Window Median · 68 lines
Slowest Key · 16 lines
Smallest Index With Equal Value · 7 lines
Smallest Integer Divisible by K · 13 lines
Smallest Missing Genetic Value in Each Subtree · 21 lines
Smallest Number in Infinite Set · 29 lines
Smallest Range Covering Elements from K Lists · 29 lines
Smallest Range I · 5 lines
Smallest String Starting From Leaf · 48 lines
Smallest String With A Given Numeric Value · 7 lines
Smallest String With Swaps · 55 lines
Smallest Subsequence of Distinct Characters · 27 lines
Smallest Subtree with all the Deepest Nodes · 27 lines
Smallest Sufficient Team · 37 lines
Smallest Value of the Rearranged Number · 19 lines
Snakes and Ladders · 37 lines
Snapshot Array · 23 lines
Solve the Equation · 17 lines
Solving Questions With Brainpower · 23 lines
Sort an Array · 51 lines
Sort Array by Increasing Frequency · 13 lines
Sort Array By Parity · 10 lines
Sort Array By Parity II · 13 lines
Sort Characters By Frequency · 8 lines
Sort Colors · 20 lines
Sort Even and Odd Indices Independently · 11 lines
Sorting the Sentence · 5 lines
Sort Integers by The Number of 1 Bits · 17 lines
Sort Integers by The Power Value · 88 lines
Sort List · 73 lines
Sort the Matrix Diagonally · 31 lines
Special Array With X Elements Greater Than or Equal X · 30 lines
Special Binary String · 55 lines
Special Positions in a Binary Matrix · 15 lines
Spiral Matrix · 36 lines
Spiral Matrix II · 40 lines
Spiral Matrix III · 40 lines
Spiral Matrix IV · 32 lines
Split Array into Consecutive Subsequences · 31 lines
Split Array Largest Sum · 36 lines
Split a String in Balanced Strings · 16 lines
Split a String Into the Max Number of Unique Substrings · 24 lines
Split Linked List in Parts · 42 lines
Splitting a String Into Descending Consecutive Values · 28 lines
Split Two Strings to Make Palindrome · 22 lines
Sqrt(x) · 15 lines
Squares of a Sorted Array · 19 lines
Stamping the Grid · 72 lines
Stamping The Sequence · 29 lines
Statistics from a Large Sample · 44 lines
Step-By-Step Directions From a Binary Tree Node to Another · 34 lines
Steps to Make Array Non-decreasing · 14 lines
Stickers to Spell Word · 38 lines
Stock Price Fluctuation · 92 lines
Stone Game · 3 lines
Stone Game II · 26 lines
Stone Game III · 16 lines
Stone Game IV · 38 lines
Stone Game V · 35 lines
Stone Game VI · 33 lines
Stone Game VIII · 13 lines
Strange Printer · 24 lines
Stream of Characters · 61 lines
String Compression · 25 lines
String Compression II · 24 lines
String Matching in an Array · 16 lines
String to Integer (atoi) · 35 lines
String Without AAA or BBB · 42 lines
Strong Password Checker · 83 lines
Strong Password Checker II · 65 lines
Student Attendance Record I · 17 lines
Student Attendance Record II · 27 lines
Subarray Product Less Than K · 23 lines
Subarray Sum Equals K · 15 lines
Subarray Sums Divisible by K · 18 lines
Subarray With Elements Greater Than Varying Threshold · 33 lines
Subdomain Visit Count · 19 lines
Subrectangle Queries · 44 lines
Subsets · 23 lines
Subsets II · 28 lines
Substrings of Size Three with Distinct Characters · 11 lines
Substring with Concatenation of All Words · 29 lines
Substring With Largest Variance · 29 lines
Subtract the Product and Sum of Digits of an Integer · 10 lines
Subtree of Another Tree · 40 lines
Successful Pairs of Spells and Potions · 42 lines
Sudoku Solver · 103 lines
Sum Game · 30 lines
Summary Ranges · 24 lines
Sum of Absolute Differences in a Sorted Array · 11 lines
Sum of All Odd Length Subarrays · 24 lines
Sum of All Subset XOR Totals · 13 lines
Sum of Beauty in the Array · 28 lines
Sum of Beauty of All Substrings · 22 lines
Sum of Digits in Base K · 11 lines
Sum of Digits of String After Convert · 27 lines
Sum of Distances in Tree · 48 lines
Sum of Even Numbers After Queries · 26 lines
Sum of Left Leaves · 16 lines
Sum of Mutated Array Closest to Target · 54 lines
Sum of Nodes with Even-Valued Grandparent · 21 lines
Sum of Numbers With Units Digit K · 21 lines
Sum of Root To Leaf Binary Numbers · 20 lines
Sum of Square Numbers · 12 lines
Sum of Subarray Minimums · 19 lines
Sum of Subarray Ranges · 16 lines
Sum of Subsequence Widths · 16 lines
Sum of Two Integers · 14 lines
Sum of Unique Elements · 16 lines
Sum Root to Leaf Numbers · 24 lines
Super Palindromes · 37 lines
Super Pow · 18 lines
Super Ugly Number · 16 lines
Super Washing Machines · 20 lines
Surface Area of 3D Shapes · 19 lines
Surrounded Regions · 57 lines
Swap Adjacent in LR String · 35 lines
Swap For Longest Repeated Character Substring · 56 lines
Swap Nodes in Pairs · 9 lines
Swapping Nodes in a Linked List · 11 lines
Swim in Rising Water · 28 lines
Symmetric Tree · 10 lines
Tag Validator · 97 lines
Tallest Billboard · 34 lines
Target Sum · 19 lines
Task Scheduler · 20 lines
Task Scheduler II · 21 lines
Teemo Attacking · 9 lines
Text Justification · 63 lines
The k Strongest Values in an Array · 24 lines
The kth Factor of n · 15 lines
The k-th Lexicographical String of All Happy Strings of Length n · 23 lines
The K Weakest Rows in a Matrix · 32 lines
The Number of Full Rounds You Have Played · 25 lines
The Number of the Smallest Unoccupied Chair · 47 lines
The Number of Weak Characters in the Game · 62 lines
The Score of Students Solving Math Expression · 24 lines
The Skyline Problem · 29 lines
The Time When the Network Becomes Idle · 46 lines
Third Maximum Number · 12 lines
Thousand Separator · 23 lines
Three Consecutive Odds · 16 lines
Three Divisors · 10 lines
Three Equal Parts · 19 lines
Throne Inheritance · 50 lines
Tiling a Rectangle with the Fewest Squares · 25 lines
Time Based Key-Value Store · 63 lines
Time Needed to Buy Tickets · 17 lines
Time Needed to Inform All Employees · 33 lines
Toeplitz Matrix · 11 lines
To Lower Case · 3 lines
Top K Frequent Elements · 11 lines
Top K Frequent Words · 22 lines
Total Appeal of A String · 12 lines
Total Hamming Distance · 13 lines
Transform to Chessboard · 71 lines
Transpose Matrix · 20 lines
Trapping Rain Water · 24 lines
Trapping Rain Water II · 50 lines
Tree of Coprimes · 55 lines
Triangle · 23 lines
Trim a Binary Search Tree · 10 lines
Truncate Sentence · 8 lines
Tuple with Same Product · 17 lines
Tweet Counts Per Frequency · 63 lines
Two Best Non-Overlapping Events · 32 lines
Two City Scheduling · 40 lines
Two Furthest Houses With Different Colors · 37 lines
Two Out of Three · 10 lines
Two Sum · 20 lines
Two Sum II - Input Array Is Sorted · 10 lines
Two Sum IV - Input is a BST · 12 lines
Ugly Number · 14 lines
Ugly Number II · 28 lines
Uncommon Words from Two Sentences · 5 lines
Uncrossed Lines · 39 lines
Unique Binary Search Trees · 15 lines
Unique Binary Search Trees II · 28 lines
Unique Email Addresses · 19 lines
Unique Length-3 Palindromic Subsequences · 37 lines
Unique Morse Code Words · 44 lines
Unique Number of Occurrences · 17 lines
Unique Paths · 11 lines
Unique Paths II · 12 lines
Unique Paths III · 67 lines
Unique Substrings in Wraparound String · 17 lines
Univalued Binary Tree · 24 lines
UTF-8 Validation · 32 lines
Valid Anagram · 15 lines
Valid Arrangement of Pairs · 27 lines
Validate Binary Search Tree · 21 lines
Validate Binary Tree Nodes · 48 lines
Validate IP Address · 29 lines
Validate Stack Sequences · 13 lines
Valid Boomerang · 23 lines
Valid Mountain Array · 13 lines
Valid Number · 19 lines
Valid Palindrome · 17 lines
Valid Palindrome II · 29 lines
Valid Parentheses · 24 lines
Valid Parenthesis String · 39 lines
Valid Perfect Square · 16 lines
Valid Square · 18 lines
Valid Sudoku · 34 lines
Valid Tic-Tac-Toe State · 41 lines
Valid Triangle Number · 21 lines
Verbal Arithmetic Puzzle · 61 lines
Verifying an Alien Dictionary · 21 lines
Verify Preorder Serialization of a Binary Tree · 13 lines
Vertical Order Traversal of a Binary Tree · 53 lines
Video Stitching · 59 lines
Vowels of All Substrings · 12 lines
Vowel Spellchecker · 24 lines
Walking Robot Simulation · 70 lines
Walking Robot Simulation II · 93 lines
Water and Jug Problem · 8 lines
Water Bottles · 12 lines
Watering Plants · 14 lines
Watering Plants II · 40 lines
Ways to Make a Fair Array · 35 lines
Ways to Split Array Into Three Subarrays · 41 lines
Where Will the Ball Fall · 18 lines
Widest Vertical Area Between Two Points Containing No Points · 10 lines
Wiggle Sort II · 20 lines
Wiggle Subsequence · 35 lines
Wildcard Matching · 34 lines
Word Break · 54 lines
Word Break II · 28 lines
Word Ladder · 59 lines
Word Ladder II · 97 lines
Word Pattern · 22 lines
Word Search · 49 lines
Word Search II · 57 lines
Word Subsets · 22 lines
X of a Kind in a Deck of Cards · 31 lines
XOR Operation in an Array · 7 lines
XOR Queries of a Subarray · 62 lines
Zigzag Conversion · 16 lines
Zuma Game · 55 lines