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I want to create a program to display three integer in decreasing order. I did as the following:

Java

import java.util.Scanner;

public class JavaApplication71 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter three integers: ");
        int num1 = input.nextInt();
        int num2 = input.nextInt();
        int num3 = input.nextInt();
        
        if ((num1 > num2 && num1 > num3) && (num2 > num3)) {
            System.out.println(num1 + ", " + num2 + ", " + num3);    
        }
        else if ((num1 > num2 && num1 > num3) && (num3 > num2)) {
            System.out.println(num1 + ", " + num3 + ", " + num2);
        }
        else if ((num2 > num1 && num2 > num3) && (num1 > num3)) {
            System.out.println(num2 + ", " + num1 + ", " + num3);
        }
        else if ((num2 > num1 && num2 > num3) && (num3 > num1)) {
            System.out.println(num2 + ", " + num3 + ", " + num1);
        }
        else if ((num3 > num1 && num3 > num2) && (num1 > num2)) {
            System.out.println(num3 + ", " + num1 + ", " + num2);
        }
        else {
            System.out.println(num3 + ", " + num2 + ", " + num1);
        }
        
    }
}

What other ways would I get the same result?

Thank you.

Posted 9-Apr-15 10:55am

Member 11594888

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Comments

Sascha Lefèvre 9-Apr-15 17:25pm

Instead of that if-else if-cascade you could swap the values of num1/num2/num3 so that they are in descending order and then have a single println-line.

Sascha Lefèvre 9-Apr-15 17:35pm

As a next step you could read the integers not into separate variables but into either an array or a list (and then sort and print it). That would allow you to handle arbitrarily many values.

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Peter Leow · Accepted Answer · 2015-04-09T15:15:00

Solution 2

Store the input in arraylist collection, e.g.

List<integer> list = new ArrayList<integer>();
list.add( num1 );
list.add( num2 );
// ...

then, sort the list in descending refer :http://stackoverflow.com/questions/5894818/how-to-sort-arraylistlong-in-java-in-decreasing-order[^]

Posted 9-Apr-15 15:15pm

Peter Leow

Updated 9-Apr-15 15:16pm

v2