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Solution: Find Peak Element

Explore how to identify a peak element in an array by applying a modified binary search approach. Understand how to efficiently reduce the search space by comparing middle elements and neighbors, ensuring a solution that runs in logarithmic time and constant space. This lesson helps you master a key algorithm technique useful in coding interviews.

Statement

You’re given a 0-indexed integer array nums. An index i is called a peak if nums[i] is strictly greater than its neighboring values (the elements immediately to its left and right, if they exist). Assume the array has virtual boundaries where nums[-1] = nums[n] = -∞, so the first and last elements can also be peaks.

Your task is to return the index of any one peak ...