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Thread: While loop help!?

  1. #1
    Junior Member
    Join Date
    Oct 2011
    Thanked 0 Times in 0 Posts

    Default While loop help!?

    I have to make a number "triangle that goes like this, using the number 5 as an example:

    except the underscores are spaces.

    Here is what I have:

    import java.util.Scanner;
    public class loop1
    public static void main(String[] args)
    Scanner stdIn = new Scanner(System.in);

    System.out.print("Enter a number (1-9): ");
    int n = stdIn.nextInt();
    while (n < 1 || n > 9)
    System.out.print("Error. Enter a number (1-9): ");
    n = stdIn.nextInt();
    System.out.println("You entered " + n + ". Have a nice day.");

    int j=1, k=1;
    while (j<=n)
    k = 1;
    while (k<=n-j)
    System.out.print(" ");
    k = 1;
    while (k<=j)


    and that produces:
    Enter a number (1-9): 5
    You entered 5. Have a nice day.

    except the underscores are spaces.

    So my question is, what do I change to have the ones go in the last column?? I've tried changing so many things!

  2. #2
    Grand Poobah
    Join Date
    Mar 2011
    My Mood
    Thanked 167 Times in 158 Posts

    Default Re: While loop help!?

    On each line after the spaces you are printing 1 - n. What you need to do is flip that around the print n - 1.
    Improving the world one idiot at a time!

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