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Grokking the Coding Interview Patterns in C++

Solution: Find Right Interval

Explore how to solve the right interval finding problem by using two min heaps, one for start times and one for end times. Understand how to efficiently match intervals by processing end times and removing invalid start times. This lesson helps you implement and analyze a solution with O(n log n) time complexity and uses heaps to optimize interval matching.

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Statement

You are given an array of intervals where each interval is represented by a pair [starti,endi][start_i, end_i]. The startistart_i values are unique, meaning no two intervals begin at the same time.

The task is to find the right interval for each interval in the list. The right interval for an interval ii is an interval jj such that startj>=endistart_j >= end_i ...