Capitalize the Title LeetCode solution in Java

1
class Solution {
2
  public String capitalizeTitle(String title) {
3

4
    char[] ch = title.toCharArray();
5
    int len = ch.length;
6

7
    for (int i = 0; i < len; ++i) {
8

9
      int firstIndex = i; // store the first index of the word
10

11
      while (i < len && ch[i] != ' ') {
12
        ch[i] =
13
            Character.toLowerCase(
14
                ch[i]); // converting the character at ith index to lower case ony by one
15
        ++i;
16
      }
17

18
      // if word is of length greater than 2, then turn the first character of the word to upper
19
      // case
20
      if (i - firstIndex > 2) {
21
        ch[firstIndex] =
22
            Character.toUpperCase(
23
                ch[firstIndex]); // converting the first character of the word to upper case
24
      }
25
    }
26

27
    return String.valueOf(ch); // return the final result by converting the char array into string
28
  }
29
}