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Solution: Single Number

Explore how to identify the single number in an array where every other element appears twice by using the bitwise XOR operator. Understand the properties of XOR, apply it efficiently in linear time with constant space, and learn how this technique solves the problem effectively.

Statement

Given an array of integers, where every element appears twice except for one, find the element that occurs only once.

Note: The solution must have linear runtime and constant space complexity.

Constraints:

  • 11 \leq nums.length 103\leq10^3
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