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Thread: Sorting and returning a method.. Help.

  1. #1
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    Default Sorting and returning a method.. Help.

    My assignment is to be able to input 3 numbers and sort them from lowest to highest, but I'm not quite sure if I'm doing this right and no idea how to return the method. Please help and thank you in advance!
    //sort 3 numbers using a method (lowest to highest)
    import java.util.Scanner;
     
    public class Sort_Numbers {
    	public static void main(String[] args) {
     
    	Scanner input = new Scanner(System.in);
     
    	//User enters numbers
    	System.out.print("The three numbers from lowest to highest");
    	displaySortedNumbers(0.0);
    	}
     
    //method
    	public static double displaySortedNumbers (double num1, double num2, double num3) {
     
    		Scanner input = new Scanner(System.in);
    		System.out.println("Please enter three numbers: ");
    			num1 = input.nextDouble();
    			num2 = input.nextDouble();
    			num3 = input.nextDouble();		
     
    		if (num1 > num2 && num1 > num3) {
    			System.out.println(num1);
    		}
    		else if (num2 > num1 && num2 > num3) {
    			System.out.println(num2);
    		}
    		else if (num3 > num1 && num3 > num2) {
    			System.out.println(num3);
    		}
    		return 0.0;
    	}
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Sorting and returning a method.. Help.

    how to return the method
    There is no way to return a method. You can return an object of a class that contains that method.

    not quite sure if I'm doing this right
    Test the code with different combinations of 3 numbers and see if it does what you want.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Sorting and returning a method.. Help.

    Alright, so I input three numbers like it shows in a video, but all it does is show the System.out that I wrote in before that
    	//User enters numbers
    	System.out.print("The three numbers from lowest to highest are: ");
    	displaySortedNumbers(15, 62, 1);
    but I also changed my code around a little, so here's the rest
    //sort 3 numbers using a method (lowest to highest)
    import java.util.Scanner;
     
    public class Sort_Numbers {
    	public static void main(String[] args) {
     
    	Scanner input = new Scanner(System.in);
    	//User enters numbers
    	System.out.print("The three numbers from lowest to highest are: ");
    	displaySortedNumbers(15, 62, 1);
    	}
     
    //non-return method
    	public static void displaySortedNumbers (double num1, double num2, double num3) {	
     
    		if (num1 > num2) {
    			double temp = num1;
    			num1 = num2;
    			num2 = temp;			
    		}
    		if (num2 > num3) {
    			double temp = num2;
    			num2 = num3;
    			num3 = temp;
    		}
    		if (num1 > num2) {
    			double temp = num1;
    			num1 = num2;
    			num2 = temp;			
    		}
     
    	}
    }

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: Sorting and returning a method.. Help.

    Where is there any print statements in that code to print out the results?
    If you don't understand my answer, don't ignore it, ask a question.

  5. The Following User Says Thank You to Norm For This Useful Post:

    Elyril (March 6th, 2014)

  6. #5
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    Default Re: Sorting and returning a method.. Help.

    Thank you so much! I totally missed that..

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