gistfile1.txt

music_names = Dir['*.{mp3}']
    
def call_shuffle playlist
    playlist_shuffle playlist, []
end

def playlist_shuffle playlist, shuffled_playlist
    
    length = playlist.length
    number = rand(length)
    song   = playlist[number]
    shuffled_playlist.push song
    playlist.delete_at(number)
    
    return shuffled_playlist if playlist.empty?

    playlist_shuffle playlist, shuffled_playlist
        
end 

playlist = call_shuffle music_names

puts playlist

filename = 'playlist.txt'

playlist.each do |song|
File.open filename, 'w' do |f|
    f.write("#{song}")
    f.close
end
end