371.Sum of Two Integers
===

###### tags: `Medium`,`Math`,`Bit Manipulation`

[371. Sum of Two Integers](https://leetcode.com/problems/sum-of-two-integers/)

### 題目描述

Given two integers `a` and `b`, return *the sum of the two integers without using the operators* `+` *and* `-`.

### 範例

**Example 1:**

Input: a = 1, b = 2
Output: 3

**Example 2:**

Input: a = 2, b = 3
Output: 5

**Constraints**:

* `-1000 <= a, b <= 1000`

### 解答

#### Javascript

function getSum(a, b) {
  while (b != 0) {
    let carry = a & b;
    a = a ^ b;
    b = carry << 1;
  }

  return a;
}

> [name=Marsgoat] [time= Dec 1, 2022]

### Reference

[回到題目列表](https://hackmd.io/@Marsgoat/leetcode_every_day)