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Grokking the Coding Interview Patterns in Python

Solution: Single Number

Understand how to use bitwise XOR operations to identify the single number in an array where every other element appears twice. This lesson guides you through implementing an O(n) time and O(1) space algorithm by leveraging XOR properties, helping you optimize solutions for coding interviews.

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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
...