# File lib/hashery/sparsearray.rb, line 57
  def *(j)
    if j.kind_of?(String)
      return self.join(j)
    else
      nha = self.class.new
      j.times { (0...self.length).each { |i| nha.set(nha.length,self.fetch(i)) } }
      return nha
    end
  end