Java Write a program that reads a list of integers, and outputs those integers in reverse. The input begins with an integer indicating the number of integers that follow. For coding simplicity, follow each output integer by a space, including the last one. Assume that the list will always contain fewer than 20 integers. Ex: If the input is: 5 2 4 6 8 10 the output is: 10 8 6 4 2 To achieve the above, first read the integers into an array. Then output the array in reverse.

Question

Darian Villarreal

Computers & Technology

16 April, 12:01

Java Write a program that reads a list of integers, and outputs those integers in reverse. The input begins with an integer indicating the number of integers that follow. For coding simplicity, follow each output integer by a space, including the last one. Assume that the list will always contain fewer than 20 integers. Ex: If the input is: 5 2 4 6 8 10 the output is: 10 8 6 4 2 To achieve the above, first read the integers into an array. Then output the array in reverse.

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Answers (2)

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Ali · Answer 1

import java. util. Scanner;

public class num5 {

public static void main (String[] args) {

Scanner in = new Scanner (System. in);

/ / Receiving the length of the array

System. out. println ("Enter the number of elements in the array");

int num = in. nextInt ();

/ / Declaring the array

int [] intArray = new int[num];

int i;

//Receiving Values into the array

for (i=0; i
System. out. println ("Enter the values");

intArray[i] = in. nextInt ();

}

//Printing the Initial Array

System. out. println ("The original arrangement of the array");

for (i=0; i
System. out. print (intArray[i]+" ");

}

System. out. println ();

//Calling Method reverseArray

System. out. println ("The Reversed array is");

reverseArray (intArray, num);

}

static void reverseArray (int a[], int n)

{

int[] reverseArray = new int[n];

int j = n;

for (int i = 0; i < n; i++) {

reverseArray[j - 1] = a[i];

j = j - 1;

}

for (int k = 0; k < n; k++) {

System. out. print (reverseArray[k]+" ");

}

}

}

Explanation:

Use Scanner class to prompt user for a length for the array int num Create an array of integers of size num Use a for loop to continually ask user to enter values into this array. Use another for loop to display the fully quantified array Define a method reverseArray static void reverseArray (int a[], int n) That accepts two parameters the array and its length and reverses the position of the elements pf the array Call the method with the main method

Tessa Bolton · Answer 2

import java. util. Scanner;

public class Main

{

public static void main (String[] args) {

final int COUNT = 20;

int[] values = new int1;

Scanner input = new Scanner (System. in);

System. out. print ("Enter the numbers: ");

for (int i=0; i
values[i] = input. nextInt ();

}

for (int i=0; i
int temp = values[i];

values[i] = values[values. length - i - 1];

values[values. length - i - 1] = temp;

}

for (int value:values) {

System. out. print (value + " ");

}

}

}

Explanation:

- Initialize a constant variable for the size of the array

- Initialize the array called values

- Ask the user for the numbers

- Put entered numbers into the array in the first for loop

- Swap the values in the second for loop

- Print the values in for each loop