Implement it on LeetCode. Alternative: divide and conquer. Merge lists in pairs, reducing to each round. This is also but uses extra space. text function mergeKLists(lists): while len(lists) > 1: merged = [] for i in 0, 2, 4, ...: merged.add(mergeTwoLists(lists[i], lists[i+1])) lists = merged return lists[0] Know both approaches. The heap solution is more intuitive. The divide-and-conquer solution uses less space.
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$ curl repovive.com/roadmaps/maang-interview-prep/heaps-priority-queues/merge-k-sorted-lists-implementation
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