help with java

sleepyescapade

For this program I need to output Pascals Triangle but print a star ‘x’ for the odd numbers and a space (‘ ‘) for the even numbers instead. I'm not sure how to do this Can anyone help?

public class Pascals {
  
    public static void main(String[] args) {

        String[] line = new String[10];
        long[][] rows = new long[10][];
        for (int i = 0; i < rows.length; i++)
        {
            rows[i] = new long[i + 1];

            // Outer entries are equal to 1
            rows[i][0] = 1;
            rows[i][rows[i].length - 1] = 1;

            // If you're on the second or subsequent row...
            if (i > 0)
            {
                //Add the bits in the middle
                for (int j = 1; j < rows[i].length - 1; j++)
                {
                    rows[i][j] = rows[i - 1][j - 1] + rows[i - 1][j];
                }
            }
        }
        
        for (int i = 0; i < 10; i++)
        {
            line[i] = "";
            for (int j = 0; j < rows[i].length; j++)   
            {
                line[i] = line[i] + rows[i][j] + " ";             
            }
        }
        
        // largest line is last line
        int largest = line[9].length();
        // print back the lines
        for(int i = 0; i < 10; i++) {
            // number of white spaces
            int nbSpace = largest - (line[i].length()) / 2;
            for(int j = 0; j < nbSpace; j++)              
                System.out.print(" ");
            System.out.println(line[i]);
        }
    }

Tobias Greeshman

Have you looked into java modulo operator "%" yet?