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;
}
} 
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