58. Length of Last Word

Leetcode String

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

java

太简单了，上代码

public int lengthOfLastWord(String s) {
    String[] stringArray = s.split(" ");
    if (stringArray.length == 0)
        return 0;
    return stringArray[stringArray.length - 1].length();
}

public int lengthOfLastWord(String s) {
    return s.trim().length()-s.trim().lastIndexOf(" ")-1;
}