题解 | #不用加减乘除做加法#异或+与运算模拟加法

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;
    }
}