triangle

import java.util.*;

public class HelloWorld {

public static void main(String[] args) {
System.out.println("hello world");
 int x=0;int j=2;
     for(int n=3;n>0;n--){
  for(int i=0;i<n;i++){
      System.out.print(" ");
  }
      for(int k=0;k<=x;k++){
  System.out.print("*");
     }
  
     x=x+2;
  System.out.print("\n");
  
      }
      for(int n =1;n<3;n++){
        for(int i=0;i<=n;i++){
          System.out.print(" ");
        }
        for(int k=0;k<=j;k++){
          System.out.print("*");
        }
        j-=2;
        System.out.print("\n");
      }

}
}