题解 | #不用加减乘除做加法#异或+与运算模拟加法
不用加减乘除做加法
http://www.nowcoder.com/practice/59ac416b4b944300b617d4f7f111b215
public class Solution { public int Add(int num1, int num2) { do { int b = num1 & num2; num1 = num1 ^ num2; num2 = b << 1; } while (num2 != 0); return num1; } }