DiamondPattern.java

package algorithms;

import java.util.Scanner;

/**
 *
 * @author Gökhan DAĞTEKİN
 * 
 * 2015
 */
public class DiamondPattern {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter a number: ");
        int number = sc.nextInt();
        int space = number;
        for (int i = 1; i <= number; i++) {
            for (int j = space; 0 < j; j--) {
                System.out.print(" ");
            }
            for (int j = 1; j <= i; j++) {
                System.out.print("* ");
            }
            System.out.println();
            space--;
        }
        for (int i = number - 1; 1 <= i; i--) {
            for (int j = number; i <= j; j--) {
                System.out.print(" ");
            }

            for (int j = 1; j <= i; j++) {
                System.out.print("* ");
            }
            System.out.println();
        }

    }
}