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

Understand how to apply a modified binary search to locate the first and last occurrences of a target value in a sorted array. This lesson teaches you to implement and optimize the algorithm to run in O(log n) time, ensuring efficient search by exploring boundaries beyond the initial target find. You will learn to handle edge cases and return accurate position indexes or indicate absence with [-1, -1].

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) ...