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 Scala (judge verdict: Accepted)

/**
  * http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=ITP1_5_A
  * Structured Program I - Print a Rectangle
  */
object Main {
  def main(args: Array[String]): Unit = {
    Iterator.continually(io.StdIn.readLine()).takeWhile(_ != null).map(_.split(" ").map(_.toInt).toSeq)
      .takeWhile { case Seq(h, w) => h > 0 && w > 0 }
      .map { case Seq(h, w) => createARectangle(h, w) }
      .foreach(_.foreach(println))
  }

  def createARectangle(h: Int, w: Int): Seq[String] = {
    (1 to h).map(_ => "#" * w) :+ ""
  }
}