Solution: Find First and Last Position of Element in Sorted Array
Explore how to locate the first and last occurrences of a target value in a sorted array using modified binary search. Learn to implement a helper function that identifies boundaries by searching left and right, ensuring a runtime complexity of O(log n). This lesson helps you develop efficient searching skills essential for coding interviews.
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We'll cover the following...
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
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