Leetcode-Length of Last Word

Given a string s consists of upper/lower-case alphabets and empty space characters

' '

, return the length of last word in the string.

If the last word does not exist, return 0.

Note: A word is defined as a character sequence consists of non-space characters only.

For example,

Given s =

"Hello World"

,

return

5

.

Solution:

public class Solution {
public int lengthOfLastWord(String s) {
s = s.trim();
int index = s.length()-1;
while (index>=0 && s.charAt(index)!=' ')
index--;
return (s.length()-index-1);
}
}