Posts Length of Last Word (InterviewBit)
Post
Cancel

Length of Last Word (InterviewBit)

PROBLEM DESCRIPTION

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.

Please make sure you try to solve this problem without using library functions. Make sure you only traverse the string once.

SOLUTION

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
public class Solution {

    public int lengthOfLastWord(final String A) {

        int length = 0;

        int i = A.length()-1;

        while(i>=0 && A.charAt(i) == ' '){
            i--;
        }

        while(i>=0 && A.charAt(i) != ' '){
            length++;
            i--;
        }

        return length;

    }

}
This post is licensed under CC BY 4.0 by the author.