TrianglePrinter.java

/**
 * 
 * @author tzaki
 * @version Oct 6, 2008
 *
 * use a nested for loop to create he folowing output:
 * []
 * [][]
 * [][][]
 * [][][][]
 * ...
 *
 */

import java.util.Scanner;

public class TrianglePrinter
{

     public static void main(String[] args)
     {
          Scanner in = new Scanner(System.in);

          int sideLength = 0;

          System.out.println("How tall?");
          sideLength = in.nextInt();
          
          for(int rows = 0; rows <= sideLength; rows++)
          {               
               for(int columns = 0; columns < rows; columns++)
               {
                    System.out.print("[]");
               }
               System.out.println();
          }
          for(int rows = 0; rows <= sideLength; rows++)
          {               
               for(int columns = sideLength - rows; columns > 0; columns--)
               {
                    System.out.print("[]");
               }
               System.out.println();
          }

     }
}