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Grokking the Coding Interview Patterns in Python

Solution: Single Number

Explore how to use the bitwise XOR operator to efficiently find the single number in an array where every other element appears twice. Understand the XOR properties, implement an O(n) time and O(1) space complexity algorithm, and apply these techniques using Python.

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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:

  • 1≤1 \leq
...