58. Length of Last Word

题目地址：https://leetcode.com/problems/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

class Solution {
    public int lengthOfLastWord(String s) {
        String[] str = s.split(" +");
        int len = str.length;
        if (len > 0)    return str[len - 1].length();
        return 0;
    }
}

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