Provide a static method that checks whether a generic array list is a palindrome; that is, whether the values at index i and n- 1- i are equal to each other, where n is the size of the array list. Write a tester class to check your method.
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- Java programming Do the same question with List Array Write a method with the name "eraser" that will get two arguments: “maparr_plants" (Map array of objects of a kind of class Plant), and "eraselist" (One dimensional array of integers). That method should erase the elements of the maparr_plants which their keys are matching the elements of the eraselist. (Hint: Check all elements of eraselist, and erase the matching (key) elements of the maparr_plants.) Solution: public static void eraser(Map maparr_plants, int [] eraselist) { for (i=0; iPlease use java. Show the steps with pictures. In this assignment, you will implement a class calledArrayAndArrayList. This class includes some interesting methods for working with Arrays and ArrayLists. For example, the ArrayAndArrayList class has a “findMax” method which finds and returns the max number in a given array. For a defined array: int[] array = {1, 3, 5, 7, 9}, calling findMax(array) will return 9. There are 4 methods that need to be implemented in the A rrayAndArrayList class: ● howMany(int[] array, int element) - Counts the number of occurrences of the given element in the given array. ● findMax(int[] array) - Finds the max number in the given array. ● maxArray(int[] array) - Keeps track of every occurrence of the max number in the given array. ● swapZero(int[] array) - Puts all of the zeros in the given array, at the end of the given array. Each method has been defined for you, but without the code. See the javadoc for each method for instructions on what the…Make sure each program has at least one method in addition to its driver method(main). Or use one driver main method and write method(s) for each of the program. Write a java program which reads in a hard coded integer array and then display the maximum and minimum value of the array and their indexes. If multiple values are candidates displaying just one and its index is fine. e.g: double [] myList = {1, 5, 5, 4, 3, 0, 5, 5, 1}; 1 and 5 and their indexes works.Exercise 2: Provide a static method that reverses the elements of a generic array list, without modifying the original list. Write a tester class to check your method.Computer Science 1. Write a generic method named array_prod() that takes an array of a generic type are returns the product of the values in the elements in the array. Make sure that the generic type extends the Number class. The Number class is defined in the java.lang package. 2. Complete the main() method to find the products of the elements in the provided arrays. Print the results in the main method using 3 decimals.Provide a different implementation of ChoiceQuestion. Instead of storing the choices in an array list, the addChoice method should add the choice to the question text. For this purpose, an addLine method has been added to the Question class. Use the following files: Question.java /** A question with a text and an answer.*/public class Question{ private String text; private String answer; /** Constructs a question with empty text and empty answer. */ public Question() { text = ""; answer = ""; } /** Sets the answer for this question. @param correctResponse the answer */ public void setAnswer(String correctResponse) { answer = correctResponse; } /** Checks a given response for correctness. @param response the response to check @return true if the response was correct, false otherwise */ public boolean checkAnswer(String response) { return response.equals(answer); } /** Add a line of text to…The implementation of a queue in an array, as given in this chapter, uses the variable count to determine whether the queue is empty or full. You can also use the variable count to return the number of elements in the queue. On the other hand, class linkedQueueType does not use such a variable to keep track of the number of elements in the queue. Redefine the class linkedQueueType by adding the variable count to keep track of the number of elements in the queue. Modify the definitions of the functions addQueue and deleteQueue as necessary. Add the function queueCount to return the number of elements in the queue. Also, write a program to test various operations of the class you defined.Write Java code for the following: Create an Arraylist that can hold Integer objects. Check and display whether the Arraylist is empty or not. Add an element 50 into the Arraylist. Add another element 60 in the position of 0 in the Arraylist. Replace the element to 70 in index 1.Please use java. In this assignment, you will implement a class calledArrayAndArrayList. This class includes some interesting methods for working with Arrays and ArrayLists. For example, the ArrayAndArrayList class has a “findMax” method which finds and returns the max number in a given array. For a defined array: int[] array = {1, 3, 5, 7, 9}, calling findMax(array) will return 9. There are 4 methods that need to be implemented in the A rrayAndArrayList class: ● howMany(int[] array, int element) - Counts the number of occurrences of the given element in the given array. ● findMax(int[] array) - Finds the max number in the given array. ● maxArray(int[] array) - Keeps track of every occurrence of the max number in the given array. ● swapZero(int[] array) - Puts all of the zeros in the given array, at the end of the given array. Each method has been defined for you, but without the code. See the javadoc for each method for instructions on what the method is supposed to do and how…Design a generic method 'sum' that accepts an array of any type such as int, double or float and this method will return the sum of all elements in the array. Create a test class and call 'sum twice by passing arrays of different types.Your activity: write a same java program that will accept 20 integer in a list and returns the index of the first occurrence of the smallest element in the array. Also, write a program to test your method. Write a Java method, smallestIndex, that takes as its parameters an int array and its size, and returns the index of the (first occurrence of the) smallest element in the array. public class Array_labExercise2 { public static void main(String[] args) { int[] list = {56, 34, 67, 54, 23, 87, 66, 92, 15, 32, 55, 15, 88, 22, 30}; System.out.print("List elements: "); printArray(list); System.out.println(); System.out.println("Index of the (first occurenc of the) " + "smallest element in list is: " + smallestIndex(list)); System.out.println("Smallest element in list is: " + list[smallestIndex(list)]); } public static void printArray(int[] list) { int counter; for (counter = 0; counter < list.length; counter++) System.out.print(list[counter] + " ");…(b) Write the method isBalanced, which returns true when the delimiters are balanced and returns false otherwise. The delimiters are balanced when both of the following conditions are satisfied; otherwise, they are not balanced. When traversing the ArrayList from the first element to the last element, there is no point at which there are more close delimiters than open delimiters at or before that point. The total number of open delimiters is equal to the total number of close delimiters. Consider a Delimiters object for which openDel is "<sup>" and closeDel is "</sup>".The examples below show different ArrayList objects that could be returned by calls togetDelimitersList and the value that would be returned by a call to isBalanced.Example 1The following example shows an ArrayList for which isBalanced returns true. As tokens areexamined from first to last, the number of open delimiters is always greater than or equal to the number of close delimiters. After examining all…SEE MORE QUESTIONS