Problem:
Print a Rectangle

Draw a rectangle which has a height of H cm and a width of W cm. Draw a 1-cm square by single '#'.

Input

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

Output

For each dataset, print the rectangle made of H × W '#'.

Print a blank line after each dataset.

Constraints

1 ≤ H ≤ 300

1 ≤ W ≤ 300

Sample Input

3 4
5 6
2 2
0 0

Sample Output

####
####
####

######
######
######
######
######

##
##

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;
import java.lang.StringBuilder;

public class Main {

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

        while(true) {
            int height = scan.nextInt();
            int width = scan.nextInt();

            if(height == 0 && width == 0){
                break;
            }

            StringBuilder sb = new StringBuilder(width);
            for(int i = 0; i < width; i++) {
                sb.append("#");
            }

            String line = sb.toString();
            for(int i = 0; i < height; i++) {
                System.out.println(line);
            }
            System.out.println("");
        }
    }
}