Question: In java please! 2.2. 20 Indirect sort. Develop and implement a version of mergesort that does not re-arrange the array, but returns an int[] array

In java please!
2.2. 20 Indirect sort. Develop and implement a version of mergesort that does not re-arrange the array, but returns an int[] array perm such that perm [i] is the index of the ith smallest entry in the array. 2.2. 20 Indirect sort. Develop and implement a version of mergesort that does not re-arrange the array, but returns an int[] array perm such that perm [i] is the index of the ith smallest entry in the array
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