// TrianglePrinting.java
// A solution to CS 5JA assignment 4, part 2, Winter 2009
// cmc, updated 2/9/09 (from Deitel instructor solutions)

import java.util.Scanner;

public class TrianglePrinting {
    public static void main( String args[] ) {
        int row, column, space;
        char c;
        int size = 0;
        final int MIN = 1;
        Scanner input = new Scanner(System.in);

        // get size, and insure it is an int in the proper range
        do {
            System.out.printf("Enter triangle size: ");

            if (input.hasNextInt()) {
                size = input.nextInt();
                if (size < MIN)
                    System.out.println("minimum size is " + MIN);
            }
            else {
                String badData = input.next();
                System.err.println("ERROR - not integer: " + badData);
            }
        } while(size < MIN);

        // get character to print
        System.out.printf("Enter character: ");
        c = input.next().charAt(0);

        // one row is printed at a time
        for ( row = 1; row <= size; row++ ) {

            // part a (leftmost triangle)
            for ( column = 1; column <= row; column++ )
                System.out.print( c );
            for ( space = 1; space <= size - row; space++ )
                System.out.print( ' ' );
            System.out.print( ' ' ); // extra space to separate triangles

            // part b
            for ( column = size; column >= row; column-- )
                System.out.print( c );
            for ( space = 1; space < row; space++ )
                System.out.print( ' ' );
            System.out.print( ' ' );

            // part c
            for ( space = 1; space < row; space++ )
                System.out.print( ' ' );
            for ( column = size; column >= row; column-- )
                System.out.print( c );
            System.out.print( ' ' );

            // part d
            for ( space = size; space > row; space-- )
                System.out.print( ' ' );
            for ( column = 1; column <= row; column++ )
                System.out.print( c );

            // advance to next print line for next row
            System.out.println();
        }
    }
}