371-sum-of-two-integers.md

371. Sum of Two Integers - 两整数之和

不使用运算符 + 和 - ​​​​​​​，计算两整数 ​​​​​​​a 、b ​​​​​​​之和。

示例 1:

输入: a = 1, b = 2
输出: 3

示例 2:

输入: a = -2, b = 3
输出: 1

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题目标签：Bit Manipulation

题目链接：LeetCode / LeetCode中国

题解

Language	Runtime	Memory
cpp	0 ms	835.6 KB

class Solution {
public:
    int getSum(int a, int b) {
        if (b == 0) {
            return a;
        } else {
            return getSum(a ^ b, (a & b) << 1);
        }
    }
};