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.

Four integers are read from input and stored into the array arrayToModify. Write a static method resetFirstValue() that takes an integer array parameter and replaces the first element with 1. Ex: If the input is 55 45 70 65, then the output is: Original array: 55 45 70 65 Changed array: 1 45 70 65 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35     Scannerscnr=newScanner(System.in); finalintNUM_ELEM=4; int[] arrayToModify=newint[NUM_ELEM]; inti; intuserNum;   for (i=0; i<arrayToModify.length; ++i) { arrayToModify[i] =scnr.nextInt(); }   System.out.print("Original array: "); printArr(arrayToModify);   resetFirstValue(arrayToModify);   System.out.print("Changed array: "); printArr(arrayToModify); } }

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Given the below 2 arrays: int​ arr1​[]​ ​=​ ​{​ 9,8,7,6,5,4,3,2,1,0 ​}; int​ arr2​[]​ ​=​ ​{​ ​99, 89, 79, 69, 59​ ​}; Write a program to replace 79 in arr2 with 4 from arr1. Print the final arr2 using Arrays.toString() method. Hint​: Use ​System​.​arraycopy() methodNote​: For all these programs, please submit the program’s .java file and screenshot of output.

Define an empty array with 4 elements inside the "main" method. The value '-1' from the user to this arrayRecord the numbers entered by the user in order until they arrive. User array with 4 elementsAfter adding, write the required method so that it can continue adding elements. This method will take the array as a parameter, expand the size of the array and return the array variable.will return. Using this method you defined, the user can add elements to the array.make it continue.

Implement getArrayElmsInRange Method Details: getArrayElemsInRange public static int[] getArrayElemsInRange​(int[] array, int lower, int upper) Returns an array with values in the range defined by lower (inclusive) and upper (inclusive). Feel free to use the getCountInRange method during the implementation of this method (See below). Parameters: array - integer array lower - lower limit upper - upper limit Returns: array with values in the range or empty array Throws: java.lang.IllegalArgumentException - if array is null or lower is greater than upper. Any error message is fine (e.g., "Invalid parameters(s)") getCountInRange Method: class Main {             // this function will return the number elements in the given range             public static int getCountInRange(int[] array, int lower, int upper)             {                         int count = 0; // to count the numbers                         // this loop will count the numbers in the range                         for (int i…

Write 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

Write a method that takes a rectangular two-dimensional array of type int. The method returns true if the sum of the even elements of the parameter array are larger than the sum of the odd elements, otherwise the method returns false. public static boolean sum(int[]0 in) Taken array Result 1 -3 17 5 -2 30 true 1 3 -1 -1 -3 -4 7 -1 10 false -1 3 -4 15

Write a static method that displays all combinations of picking two numbers from the array list: public static void combinations(ArrayList<Integer> list) Include the driver program that prompts the user to enter 10 integers and displays all combinations of picking two numbers from the array list.