58. Length of Last Word #

Problem Statement: #

Given a string s consisting of words and spaces, return the length of the last word in the string.

• A word is a maximal substring consisting of non-space characters only.

Example 1: #

Input: s = "Hello World"
Output: 5
Explanation: The last word is "World" with length 5.

Example 2: #

Input: s = " fly me to the moon "
Output: 4
Explanation: The last word is "moon" with length 4.

Example 3: #

Input: s = "luffy is still joyboy"
Output: 6
Explanation: The last word is "joyboy" with length 6.

Constraints: #

• 1 <= s.length <= 10⁵
• s consists of only English letters and spaces ' '.
• There will be at least one word in s.

Solution: #

public int lengthOfLastWord(String s) {
  int count = 0;
  for (int i = s.length() - 1; i >= 0; i--) {
    if (s.charAt(i) != ' ')
      count++;
    else if (count > 0)
      return count;
  }
  return count;
}

... #