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Grokking the Coding Interview Patterns in Python

Solution: Single Number

Understand how to apply bitwise XOR operations to efficiently find the number that appears only once in an array where others appear twice. Discover the algorithm's logic and its O(n) time with O(1) space efficiency.

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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
...