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Solution: Find First and Last Position of Element in Sorted Array

Explore how to apply modified binary search to identify the first and last indexes of a target element in a sorted array. Understand how to continue searching after finding the target to accurately find both boundaries, achieving optimal logarithmic runtime and constant space complexity.

Statement

You are given an integer array, nums, that is sorted in non-decreasing order. Your task is to find the first and last indexes of a given value, target, within this array.

If the target does not appear in the array at all, return [-1, -1].

Note: You must write an algorithm with O(logn)O(\log n) ...