Sum of Two Integers
Medium · Bit Manipulation
You are given two integers. Return their sum, but you may not use the + or - operators (or any built-in sum/subtract helpers) to compute it. Think in terms of bitwise operations to combine the values instead.
Examples
Input: a = 1, b = 2
Output: 3
Why: 1 plus 2 equals 3, computed without using + or -.
Input: a = 2, b = 3
Output: 5
Why: 2 plus 3 equals 5.
Input: a = -2, b = 3
Output: 1
Why: Adding a negative and a positive number gives 1.
Constraints
-1000 <= a, b <= 1000
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This statement is written for CodeSpeek. The problem is part of the NeetCode 150 list; Watch NeetCode's explanation of Sum of Two Integers. Reference solutions from the NeetCode repository (MIT) are used to verify our tests.