public class Solution { public int Add(int num1,int num2) { int n1=(num1&num2)<<1; int n2=num1^num2; while((n1&n2)!=0){ num1=n1; num2=n2; n1=(num1&num2)<<1; n2=num1^num2; } return n1^n2; } }
不用加减乘除做加法
原文：http://www.cnblogs.com/tobemaster/p/5926031.html
