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Grokking the Coding Interview Patterns in Go

Solution: Smallest Range Covering Elements from K Lists

Explore how to determine the smallest range covering at least one element from each of k sorted lists. Understand the use of a min heap and pointers to track current ranges dynamically, optimizing both time and space complexity. This lesson helps you implement and analyze an efficient solution for a common coding interview pattern.

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Statement

You are given kk sorted lists of integers, nums, where each list in nums is in non-decreasing order. Your task is to find the smallest range that contains at least one element from each of the kk lists.

A range [a,b][a,b] is considered smaller than another range [c,d][c,d] if ...