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Solution: Single Element in a Sorted Array

Explore how to identify the single element appearing once in a sorted array where all others appear twice. Learn to apply a modified binary search with pointers to efficiently locate the unique element while maintaining logarithmic time complexity and constant space usage.

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 ...