Question

Write a method swapArrayEnds0 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. 1 import java.util.Scanner; 3 public class ModifyArray 4 5 Display array values 6 public void displayValues(intarrayVals) 7 int i; for (i-o; i < arrayvals.length; ++?) { 10 System.out.printCarrayValsCi] +); System.out.println("); 12 13 14 15/ Your solution goes here*/ 16

Answer 1

ModifyArray.java

import java.util.Scanner;

public class ModifyArray {

/* Display array values */

public void displayValues(int [] arrayVals) {

int i;

for (i = 0; i < arrayVals.length; ++i) {

System.out.print(arrayVals[i] + " ");

}

System.out.println("");

}

private void swapArrayEnds(int[] sortedArray) {

int firstElement=sortedArray[0];

int lastElement=sortedArray[sortedArray.length-1];

int temp;

temp=firstElement;

firstElement=lastElement;

lastElement=temp;

sortedArray[0]=firstElement;

sortedArray[sortedArray.length-1]=lastElement;

}

public static void main (String [] args) {

int numElem = 4;

int[] sortedArray = new int[numElem];

ModifyArray numInverter = new ModifyArray();

// Add values to the array

sortedArray[0] = 10;

sortedArray[1] = 20;

sortedArray[2] = 30;

sortedArray[3] = 40;

numInverter.swapArrayEnds(sortedArray);

numInverter.displayValues(sortedArray);

}

}

______________

Output:

40 20 30 10

_____________Thank You