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Solution: Single Element in a Sorted Array

Explore how to efficiently find the single non-duplicate element in a sorted array where every other element appears twice. Learn to apply a modified binary search approach that leverages index parity to reduce search space, resulting in logarithmic time and constant space complexities. This lesson guides you through the step-by-step reasoning and implementation, helping you master this common interview problem pattern.

Statement

You are given a sorted array of integers, nums, where all integers appear twice except for one. Your task is to find and return the single integer that appears only once.

The solution should have a time complexity of O(logn)O(\log n) or better and a space complexity of O(1)O(1).

Constraints:

  • 11 \leq ...