Using Java implementations presented in the algorithms below.Practice Mergesort algorithm with Comparable Java objects whose class definition implements Java's Comparable interface. For example, using sample Comparable Student objects  or Comparable Java class objects of your own implementation.

I want this in python code and explanation step by step

Write a Java method using recursion that reorders an integer array in such a way that all the even values comes before the odd values Here is the code to start, fill in the missing part  output should be 8 6 2 4 4 4 4 3 5 5 3 7 1 9

Hello, i need help with understanding Big-O.   What is the execution time Big-O for each of the methods in the Queue-1.java interface for the  ArrayQueue-1.java  and   CircularArrayQueue-1.java implementations? Short Big-O reminders: Big-O is a measure of the worst case performance (in this case execution time). O(1) is constant time (simple assignment statements) O(n) is a loop that iterates over all of the elements. O(n2) is one loop nested in another loop, each of which iterates over all the elements. If a method calls another method, what happens in the called method must be taken into consideration. Queue.java public interface Queue<E> {    /**      * The element enters the queue at the rear.      */    public void enter(E element);     /**      * The front element leaves the queue and is returned.      * @throws java.util.NoSuchElementException if queue is empty.      */    public E leave();     /**      * Returns True if the queue is empty.      */    public boolean…