CODE 75: 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.

public int lengthOfLastWord(String s) {// Note: The Solution object is instantiated only once and is reused by// each test case.char[] cs = s.toCharArray();int lastLength = 0;int length = 0;for (int i = 0; i < cs.length; i++) {if ((cs[i] >= 'A' && cs[i] <= 'Z')|| (cs[i] >= 'a' && cs[i] <= 'z')) {length++;} else {if (length != 0) {lastLength = length;}length = 0;}}if (length != 0) {lastLength = length;}return lastLength;}