Merge k Sorted Lists (Popular) Problem

Merge k Sorted Lists (Popular) Problem — ExecCode Hard DSA Practice

Solve the Merge k Sorted Lists (Popular) problem on ExecCode. Free online hard DSA practice in Arrays - Basics. Write and run code in Java, C++, Python — no signup required to run.

Problem description

Merge k Sorted Lists (Popular). Min-heap of heads. For Merge k Sorted Lists (Popular), focus on the exact input variables, return only the requested value, and preserve the required time complexity for the intended pattern.

Examples

Input lists = [[1, 4, 5], [1, 3, 4], [2, 6]]; Output [1, 1, 2, 3, 4, 4, 5, 6]

Constraints

1 ≤ n ≤ 10^5

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