Computer Science Canada

Creating a diagonal periodic table
Author:  Krocker [ Mon Oct 07, 2013 3:22 pm ]
Post subject:  Creating a diagonal periodic table
ok so i have to create a diagonal multiplication table, i have managed to make the full table, but unable to get it diagonal.

Something like this (table for 7s)
1
2 4
3 6 9
4 8 12 16
5 10 15 20 25
6 12 18 24 30 36
7 14 21 28 35 42 49

but i have
1 2 3 4 5 6 7
2 4 6 8 10 12 14
3 6 9 12 15 18 21
4 8 12 16 20 24 28
5 10 15 20 25 30 35
6 12 18 24 30 36 42
7 14 21 28 35 42 49

Heres my code so far:

code:

import java.util.Scanner;

public class question3{
        public static void main (String[] args){
                Scanner userInput = new Scanner (System.in); //creates the input object
               
                int factor = 0;
                int result;
               
                while (factor <  1 || factor > 10){
                        System.out.print ("Enter an integer between 1 and 10: ");
                        factor = userInput.nextInt();
                }       
               
      // prints main table
                for (int i = 1; i <= factor; i++) {
                        for (int j = 1; j <= factor; j++) {
                                result = i*j;
                                System.out.printf("%-5d", result);
                        }
                        System.out.println();
                }
       

               
               
        }       
}
Author:  DemonWasp [ Mon Oct 07, 2013 4:24 pm ]
Post subject:  RE:Creating a diagonal periodic table
Well, on the first row (i == 1) you want the inner loop to print exactly one number.

On the second row (i == 2) you want the inner loop to print exactly two numbers.

Do you see a pattern? How would you implement that pattern?
Author:  Krocker [ Mon Oct 07, 2013 5:13 pm ]
Post subject:  RE:Creating a diagonal periodic table
ok, so, each row would increase by one, i got that, so # of r== i, but i cant seem to figure out how to imply that to a for loop. The only way i can think of is by using an if statement, however, im only allowed to use for statements. Also, the max number expected is 10, so thats not a problem
Author:  Raknarg [ Mon Oct 07, 2013 7:00 pm ]
Post subject:  RE:Creating a diagonal periodic table
You just said it yourself, the j loop can only go up to whatever loop i is at.
Author:  Krocker [ Mon Oct 07, 2013 7:28 pm ]
Post subject:  RE:Creating a diagonal periodic table
ya i figured it out, i made j > row, where row increases by one every time a row is done. It worked! Thanks.

:


You can syndicate this boards posts using the file backend.php or view the topic map using sitemap.php.

Terms of Use | Privacy Policy