Note: initialize arrays in all three tasks by random values. Ask user which task to execute and your code should keep running until user say so. 1. Block swap algorithm for array rotation Write a function rotate(ar[], d, n) that rotates arr[] of size n by d elements. Rotation of the above array by 2 will make array. In your main function, Declare array of size 7. Initialize this array with random values. Display this array Ask user for number of elements to rotate d. Call the user defined function named rotate Display the array again. 2. k largest elements in an array Write C++ code for printing k largest elements in an array of size 50. Display the array after initialization and display k largest values in that array. For example, if given array is [1, 23, 12, 9, 30, 2, 50] and you are asked for the largest 3 elements i.e., k = 3 then your program should print 50, 30 and 23. Take input from a user for value k. 3. Sorting Take an array of size 10 in main function. Write sorting(int arr[]) function to sort your array in decreasing order. Display the array before and after calling sorting function in main function.