Write array methods that carry out the following tasks for an array of integers by creating and completing the "ArrayMethods" class below. Add documentation comments for each method. Provide a test program called Labs_yourlD.java" that test methods of ArrayMethods class. In your test program, use random class to generate array values.
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- Please use java. Write array methods that carry out the following tasks for an array of integers by creating and completing the “WorkingWithArrays” class below. Add documentation comments for each method. Provide a test program called ‘Lab5_yourID.java” that tests methods of WorkingWithArrays class. In your test program, use random class to generate array values.public class WorkingWithArrays{private int[ ] values; //declare instant variables//constructorpublic WorkingWithArrays (int[ ] initialValues) {values = initialValues;}public void MoveOddElements( ) { … }public boolean containDuplicate( ) {…}}• Method MoveOddElements: moves all odd elements values to the front (if any exist), otherwise preserve the order of the elements.• Method containDuplicate: returns true if the array contains duplicate elements (not necessary to be adjacent)java In this task, you need to write 2 overloaded methods findMax() that will find a maximum number in the array. First version should work with array of integers (int[]) and return int, and second method should work with an array of doubles (double[]) and return double as a result. Methods must have the same name and different parameters.(Java) question 4 Complete the following method to insert a value into an array: public static void insert(String array[], int numElements, int indexToInsert, String newValue) { if (array.length == numElements) { System.out.println("Array is full. No room to insert."); return; } //start at end and work backwards shifting names down for (int i = numElements; i > indexToInsert; i--) { //fill in the missing line here } array[indexToInsert] = newValue;} Group of answer choices array[i - 1] = array[i]; array[i] = array[indexToInsert]; array[indexToInsert] = array[i]; array[i] = array[i - 1]; array[i] = array[i + 1];
- Define an array to be a 121 array if all elements are either 1 or 2 and it begins with one or more 1s followed by a one or more 2s and then ends with the same number of 1s that it begins with. Write a method named is121Array that returns 1 if its array argument is a 121 array, otherwise, it returns 0. There is one additional requirement. You should return 0 as soon as it is known that the array is not a 121 array; continuing to analyze the array would be a waste of CPU cycles. If you are programming in Java or C#, the function signature isint is121Array(int[ ] a) If you are programming in C or C++, the function signature isint is121Array(int a[ ], int len) where len is the number of elements in the array a. Examples a is then function returns reason {1, 2, 1} 1 because the same number of 1s are at the beginning and end of the array and there is at least one 2 in between them. {1, 1, 2, 2, 2, 1, 1} 1 because the same number of 1s are at the beginning and end of…Write array methods that carry out the following tasks for an array of integers bycompleting the ArrayMethods class below. For each method, provide a test program.public class ArrayMethods{private int[] values;public ArrayMethods(int[] initialValues) { values = initialValues; }public void swapFirstAndLast() { . . . }public void shiftRight() { . . . }. . .} bjeo_ch07p.indd 6 11/21/18 5:15 PM Practice Exercises EX7-7 a. Swap the first and last elements in the array.b. Shift all elements to the right by one and move the last element into the firstposition. For example, 1 4 9 16 25 would be transformed into 25 1 4 9 16.c. Replace all even elements with 0.d. Replace each element except the first and last by the larger of its two neighbors.e. Remove the middle element if the array length is odd, or the middle twoelements if the length is even.f. Move all even elements to the front, otherwise preserving the order of theelements.g. Return the second-largest element in the array.h. Return true…Please 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…
- Write in java code Create an array myArr of 10 integer elements and initialize/fill it with numbers (not sorted) between 0 and 20; for example myArr = [ 12, 3, 19, 5, 7, 11,….etc.]. (a) print the array. (b) Use method sort() of class Arrays to sort myArr and print it after sorting. (c) Use the arraycopy() method of class System to copy myArr to another array called my2ndArr, then print both arrays. (d) use method equals() of class Arrays between the two arrays and print the results. (e) use method fill() to fill my2ndArr with 99 in all elements and then use method equals()and print the result whether the two arrays are equal or not. (f) use the method binarySearch() to search myArr for the value 15 and print the resultPlease use java only and public int method. Show the steps with the pictures also. 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…Complete the following code for sorting an array of objects of the described ??????? class. The method should sort the elements of the array according to a decreasing order of the averages of the students. public class practice { public void sort (student[] aArray) { practice student; int chosenIndex = 0; for ( int x = 0; x < aArray.length - 1; x++) { chosenIndex = x; for (int y = x + 1; y < aArray.length; y++) { if (____) chosenIndex = y; } if (chosenIndex != x) { temp = ____; aArray[x] = ____; _____; } }}
- in java Declare and initialize an array with 8 integer elements. Use therandom method of the Math class to initialize the values with randomintegers between 1 and 50 (exclude 50) and print each of them onConsole.Write a class ArrayClass, where the main method asks the user to enter the four numbers. Create a method printArray that prints the array whenever required (use Array.toString method). Make the program run as shown in the Sample Run below. Use Array.sort, Arrach.bianrySearch, Array.equals Sample RunList1, Enter four numbers: 2 3 3 2List2, Enter four numbers: 6 2 5 4List3, Enter four numbers: 5 2 4 6Your original List1: [2, 3, 3, 2]Your original List2: [6, 2, 5, 4]Your original List3: [5, 2, 4, 6]Sorted List1 is: [2, 2, 3, 3]Enter a number from the sorted List1 to search for: 3Value 3 is in index 2 (or position 3)List that are the same when sorted: [2, 4, 5, 6Write a method reverse that takes an array as an argument and reverses it. Do not create a new array. Modify the array parameter. Only edit code in the /* Your code goes here */ portions.