Write a method, shuffle(A), that rearranges the elements of array A so that every possible ordering is equally likely. You may rely on the nextInt(n) method of the java.util.Random class, which returns a random number between 0 and n − 1 inclusive.
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Write a method, shuffle(A), that rearranges the elements of array A so that every possible ordering is equally likely. You may rely on the nextInt(n) method of the java.util.Random class, which returns a random number between 0 and n − 1 inclusive.
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- run the main() method of class Lab11D. Pls do the SWAPIN LAB 11D and below is the tester For example, A B C D E F should turn into D E F A B C. You should assume that the array list has an even number of elements (not necessarily 6). One solution is to keep removing the element at index 0 and adding it to the back. Each step would look like this: A B C D E F B C D E F A C D E F A B D E F A B C When you run the code, you will find that there is a lot of movement in the array list. Each call to remove(0) causes n - 1 elements to move, where n is the length of the array. If n is 100, then you move 99 elements 50 times, (almost 5000 move operations). That's an inefficient way of swapping the first and second halves. (Learn more about time complexity at the end of the lab). Come up with a better way in which you swap the elements directly. Hint: How do you swap the two elements A and D? A B C D E F D B C A E F D E C A B F D E F A B C Write pseudocode for this algorithm. Add…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…5. Write a static method largestColumnFirst() that receives as parameter a 2D array numAr,finds the column with the largest sum, and switches it with the first column. For example:6 7 9 4 8 9 7 6 4 83 2 7 4 1 → 7 2 3 4 19 4 5 8 3 5 4 9 8 3
- Write a method swapArrayEnds() that swaps the first and last elements of its array parameter. Ex: sortArray = {10, 20, 30, 40} becomes {40, 20, 30, 10}. The array's size may differ from 4. new code can only be added between existing code. as seen in image.Write the method printTail() method that accepts an array of integers and an integer index as parameters and prints all the array elements starting from the index passed. For example if printTail(x,5) is invoked, it should print all the elements of the array x starting at x[5].Implement a method named “randomArray” in the file named “BSTTest.java” that tests a specific sorting algorithm. This method will take one parameter: size of a randomly generated array (int): e.g., 10 This method will: Generate and return a random array of the length specified by the parameter The value range of each element should be between 0 and 1000 (inclusive) >>> randomArray(5). >>> [1, 2, 3, 7, 10] Implement a method named “test” in the file named “BSTTest.java”. This method should take advantage of the implemented randomArray and print out information as such: Testing of BST starts. Insert 3 Insert 2 Insert 5 Insert 100 Delete 3. The traverse gives a BST as 3, 5, 100 Testing of BST ends. Please note that the goal is not to manually code the printings of each line. Try your best to make this method as automatic as possible. There are no limits on what parameters this method shall accept or what it returns. However, please make sure to use the method to…
- Please 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…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 a helper method, with the signature eliminateZerosinArray[int[]): int[], that takes a single dimensional int array as an argument, and returns a new array that only contains the original values that are not equal to 0. The returned array may be the same size or smaller depending on whether there are values that are equal to 0 in the original array. You may only use standard intl| arrays to solve this.
- PLease use java In this assignment, you will implement a class called ArrayAndArrayList. This class includessome interesting methods for working with Arrays and ArrayLists.For example, the ArrayAndArrayList class has a “findMax” method which finds and returns themax number in a given array. For a defined array: int[] array = {1, 3, 5, 7, 9}, callingfindMax(array) will return 9.There are 4 methods that need to be implemented in the ArrayAndArrayList class:● howMany(int[] array, int element) - Counts the number of occurrences of the givenelement 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 givenarray.● swapZero(int[] array) - Puts all of the zeros in the given array, at the end of the givenarray.Each method has been defined for you, but without the code. See the javadoc for each methodfor instructions on what the method is supposed to do and how to write the code. It…java Finish the method called printUniqueNumbers() that will take anint [] and print out all of the unique numbers in the array. A number is unique when it is only found in the array one time. This is a void method with an int [] parameterWrite a void method selectionSortDescendTrace() that takes an integer array, and sorts the array into descending order. The method should use nested loops and output the array after each iteration of the outer loop, thus outputting the array N-1 times (where N is the size). Complete main() to read in a list of up to 10 positive integers (ending in -1) and then call the selectionSortDescendTrace() method. If the input is: 20 10 30 40 -1 then the output is: 40 10 30 20 40 30 10 20 40 30 20 10