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Interview Question Length of Last Word

Last update: 4/27/2018 11:28:00 PM

By Fatih KABAKCI

The problem is to figure out the length of the last word in a String object.

Problem #58: Length of Last Word

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. Example:
Input: "Hello World"
Output: 5

Difficulty: Easy

Solution in Java

/**
 * 
 * @author fkabakci
 * 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.
 * 
 * Example:
 * Input: "Hello World"
 * Output: 5
 */
class Solution {
    public int lengthOfLastWord(String s) {
		String words[] = s.split(" ");
		if (words.length < 1) {
			return 0;
		}
		return words[words.length - 1].length();
    }
    
    public static void main(String[] args) {
		System.out.println(new Solution().lengthOfLastWord("a"));
	}
}

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