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13 December, 00:38

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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  1. 13 December, 00:45
    0
    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
  2. 13 December, 02:27
    0
    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
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