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Implement Merge Sort in Python
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Implement Merge Sort in Python

MediumPython

Problem

How would you solve a sorting algorithm problem within a live coding time constraint?

Implement merge_sort(nums) to return the input integers in nondecreasing order. Use a comparison-based algorithm rather than the built-in sorting function. The function should return a new list and leave nums unchanged.

Input: a list of integers. Output: a sorted list of integers.

Constraints

  • 0 <= len(nums) <= 10^4
  • -10^9 <= nums[i] <= 10^9
  • Do not use the built-in sorted function or list.sort method
  • The input list must not be modified

Function Signature

def merge_sort(nums):
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