题解 | #不用加减乘除做加法#
不用加减乘除做加法
https://www.nowcoder.com/practice/59ac416b4b944300b617d4f7f111b215
唔。。。建议具体思路看官方题解，不过我还是建议背下来
class Solution {
public:
int Add(int num1, int num2) {
while (num2) {
int sum = num1 ^ num2;
int carry = (num1 & num2) << 1;
num1 = sum;
num2 = carry;
}
return num1;
}
};
