CodingBat mergeSortInts

mergeSortInts

Given an unsorted array of integers, implement a merge sort algorithm to return the original array with its elements arranged in ascending order.

mergeSortInts([9, 7, 5, 3, 1]) → [1, 3, 5, 7, 9]
mergeSortInts([1, 2, 3, 4, 5]) → [1, 2, 3, 4, 5]
mergeSortInts([11, 4, 67, 12, 14]) → [4, 11, 12, 14, 67]

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Difficulty: 250

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