Problem: Find Peak Element

Statement

A peak element in an array is one that is strictly greater than both of its neighbors.

Given a $0$-indexed integer array nums, return the index of any peak element.

Note: Elements at the boundaries of the array are compared against $-\infty$. That is, the virtual positions nums[-1] and nums[n] are both treated as $-\infty$, where n is the length of nums. This means an element can be considered a peak if it only needs to be greater than its single existing neighbor at the edges. Additionally, no two adjacent elements in nums are equal. You ...