implement a parametrized version of mergesort that  will allow us to choose how many parts the input array will be divided into. This method will take an integer array and integer K as inputs and produce one integer array as  output. It will sort the input array by dividing it into K parts, recursively sorting those parts, and using  the mergeAll method to merge the K sorted arrays into one sorted array. Implement the mergesortK method    public static int[] mergesortK(int[] arr, int k) {         return new int[] {-1};     }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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implement a parametrized version of mergesort that 
will allow us to choose how many parts the input array will be divided into.
This method will take an integer array and integer K as inputs and produce one integer array as 
output. It will sort the input array by dividing it into K parts, recursively sorting those parts, and using 
the mergeAll method to merge the K sorted arrays into one sorted array.


Implement the mergesortK method

 

 public static int[] mergesortK(int[] arr, int k) {
        return new int[] {-1};
    }
 
*must be done in this format and in java please
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