Draw That Square!

Modules - Structured Programming 1, Structured Programming 2

Teacher’s Notes:

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This is a relatively simple exercise that gets students thinking mathematically to break down a problem.

My JAVA solution below is just one way of doing this but there are many more!

Assignment:

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Draw That Square

In this assignment, you will write a program that reads a single integer d , followed by a single character c from the keyboard. There is no prompt for this input and there is no need to error trap.

The value of d will be such that 1 <= d <= 50. c may be any printable symbol from the ASCII table.

The program will then draw a hollow square with edges made of the symbol that is d x d . Note that due to the way the square may be printed, it may look more rectangular.

Sample Input:

Sample Output:

hhhh

h h

hhhh

Explanation:

The first input is a 4 indicating that the square should be 4 symbols by 4 symbols. The next character input is an 'h' which indicates that the symbol should be an 'h'.

Solution (JAVA):

import java.util.Scanner;

class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int dimension = input.nextInt();
String symbol = input.next();

       if(dimension == 1)
           System.out.print(symbol);
       else {

           for(int x = 0; x < dimension; x++)
               System.out.print(symbol);
           System.out.println();

           for(int y = 0; y < dimension - 2; y++){
               System.out.print(symbol);
               for(int x = 0; x < dimension-2; x++)
                   System.out.print(" ");
               System.out.println(symbol);
           }

           for(int x = 0; x < dimension; x++)
               System.out.print(symbol);
           System.out.println();
       }

}
}