Merge K Sorted Lists

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Problem

Merge k Sorted Lists

Asked in the Coding stage. LeetCode 23.

Task

Implement merge_k_lists(lists). Each input list is sorted in nondecreasing order. Return one sorted list containing every value from every input list. Lists are represented as Python arrays for grading; an empty list represents an empty linked list.

Constraints

0 <= len(lists) <= 100
The total number of values across all lists is at most 500
Each input list is sorted in nondecreasing order
Values are integers

Function Signature

def merge_k_lists(lists):

Your solutionPython 3

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