Java display contents of array from last user input to first user input

Question

I'm wondering how to display the contents of an array from the last user input to the first user input. For example, if the user input 67 12, I would want to display 12 67, or 56 12 45 23, I would want 23 45 12 56. Unfortunately googling this and searching here only gets me results on descending order which I already have written in another part of my code. Thank you for any help, this is my current code:

import java.util.*;
class Array{
  public static void main(String args[]){
      int[] a=new int[2];
      int[] b=new int[a.length];
      Integer[]c = new Integer[a.length];

      Scanner input=new Scanner(System.in);

      System.out.println("Please enter two numbers:");
      for(int j=0;j<2;j++){
          a[j]=input.nextInt();
       }

      System.arraycopy(a,0, b, 0, a.length);

      for(int i = 0; i < a.length; i++){
          c[i] = new Integer(a[i]);
      }


      Arrays.sort(a);

      int i;

      System.out.println("Last to First:");

      //Display contents of array 'a' from last user input to first user input.

      System.out.println("Ascending order:");

      for(i=0; i < a.length; i++) {
        System.out.println(a[i]);
      }

      Arrays.sort(c, Collections.reverseOrder());

      System.out.println("Descending order:");

      for(i=0; i < c.length; i++) {
        System.out.println(c[i]);
      }

  }

}

you just want to print the Array in reverse order right? why dont you loop in backward manner? — Deendayal Garg
– Deendayal Garg, Commented Sep 8, 2016 at 4:34

Jon AL · Accepted Answer · 2016-09-08 04:43:10Z

1

if your array is like this : 
arr[0] = 56
arr[1] = 12
arr[2] = 45
arr[3] = 23

get the length and count your loop decremented

for(int i = arr.length - 1; i >= 0 ; i--) {
     System.out.println(arr[i]);
   }

edited Sep 8, 2016 at 4:43

answered Sep 8, 2016 at 4:39

Jon AL

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4 Comments

Govind Madhu Over a year ago

It should be arr.length-1. Because array positions start from 0.

Jon AL Over a year ago

Ahh my bad.. i forgot.. :)

lbreedlove Over a year ago

This worked perfectly using the -1. Thank you both very much for your help!

progyammer Over a year ago

@lbreedlove If you have got an answer to the question, then please mark the answer as the correct one.

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