
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Mergesort is a method that takes an integer array and returns a sorted copy of the same array. It
first sorts the left half of the input array, then the right half of the input array, and finally merges the
two sorted halves together into a sorted version of the input array.
Implement the mergesort method
public static int[] mergesort(int[] arr) {
return new int[] {-1};
}
*must be in this layout and done in java
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