简单题
public class Solution { public int lengthOfLastWord(String s) { s = s.trim(); if(s==null||s.length()==0) return 0; int len =s.length(), cnt=0; while(len>0 && s.charAt(len-1)!=‘ ‘){ cnt++; len--; } return cnt; } }
原文：http://www.cnblogs.com/jiajiaxingxing/p/4545413.html