题解 | #不用加减乘除做加法#
不用加减乘除做加法
http://www.nowcoder.com/practice/59ac416b4b944300b617d4f7f111b215
public:
int Add(int num1, int num2) {
int a = num1&num2,b = num1^num2;
while(a){
a<<=1;
num1 = a;
num2 = b;
a = num1&num2;
b = num1^num2;
}
return b;
}
};
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