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Solution: Smallest Range Covering Elements from K Lists

Explore how to identify the smallest range that contains at least one element from each of k sorted lists. This lesson helps you understand and implement a min heap-based approach to dynamically track and narrow down the range while maintaining one element from each list, optimizing both time and space complexity.

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 ...