segitaga angka

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package test;

/**
 *
 * @author andika
 */
public class test {
    public static void main(String[] args) {
        int x = 5;
        int print = x;
        boolean plus = true;
        for (int i = 0; i < x ;i++) {
            for (int j = x-1; j >=0; j--) {
                if(i==j || j==0 || i==(x-1) ){                    
                    int intprint = (print==10)?0:print;
                    System.out.print(intprint);
                    if(plus){
                        print++;
                    }else{
                        print--;
                    }
                    if(print==0 || print==10){
                        plus=!plus;
                    }
                }else{
                    System.out.print(" ");
                }
               
            }
            System.out.println("");
        }
    }
}

output contoh
run:
5
6 7
8 9
0 9
87654