Print Diamond Shaped Pattern | Java Programs

Output:

*** Diamond-Shaped Pattern ***

   1
  212
 32123
4321234
 32123
  212
   1

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Solution:

/**
 *
 * @author Alee Ahmed Kolachi
 */
public class NumberPatternTop {

    public static void main(String[] args) {
        System.out.println("*** Diamond-Shaped Pattern ***" + "\n");
        for (int i = 1; i <= 4; i++) {
            int n = 4;

            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = i; k >= 1; k--) {
                System.out.print(k);
            }
            for (int l = 2; l <= i; l++) {
                System.out.print(l);
            }

            System.out.println();
        }

        for (int i = 3; i >= 1; i--) {
            int n = 3;

            for (int j = 0; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = i; k >= 1; k--) {
                System.out.print(k);
            }
            for (int l = 2; l <= i; l++) {
                System.out.print(l);
            }

            System.out.println();
        }

    }
}