Search⌘ K
AI Features

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

Understand how to implement a modified binary search to find the first and last occurrences of a target element in a sorted array. This lesson teaches you to leverage sorted order to achieve O(log n) runtime by searching boundaries separately, helping improve problem-solving skills for coding interviews.

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) ...