Search⌘ K
AI Features

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

Explore how to use modified binary search to locate the first and last occurrences of a target value in a sorted array. Understand the step-by-step approach to maintain logarithmic runtime while accurately finding boundaries, and learn to implement the helper function to achieve this efficiently.

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) ...