Write and test a Java method clshift() that performs a circular left shift on an array of n integers.

import java.util.Scanner;import java.util.ArrayList;import java.util.StringTokenizer; public class PlantArrayListExample {    // TODO: Define a printArrayList method that prints an ArrayList of plant (or flower) objects                                                             public static void main(String[] args) {      Scanner scnr = new Scanner(System.in);      String input;      // TODO: Declare an ArrayList called myGarden that can hold object of type plant       // TODO: Declare variables - plantName, plantCost, flowerName, flowerCost, colorOfFlowers, isAnnual            input = scnr.next();      while(!input.equals("-1")){         // TODO: Check if input is a plant or flower         //       Store as a plant object or flower object         //       Add to the ArrayList myGarden               input = scnr.next();      }            // TODO: Call the method printArrayList to print myGarden         }}

Write a Java method called average which takes an array as parameter and returns the average value.   [1, 2, 3] 2   Create an array in main method, call the method and print it out.   Troubleshooting: do you return a value in average method?     class Main {public static double average(int [] array) {}public static void main(String[] args) {}}

Given an array of numbers, and an integer, find the last index that    that integer appears in the array. If the number is not    found, return -1.   import java.util.ArrayList;public class LastIndexFound{public static int solution(ArrayList<Integer> nums, int numToFind){// ↓↓↓↓ your code goes here ↓↓↓↓return 0;}}