io_ex

# I/O Exercises
#
# * Write a `guessing_game` method. The computer should choose a number between
#   1 and 100. Prompt the user to `guess a number`. Each time through a play loop,
#   get a guess from the user. Print the number guessed and whether it was `too
#   high` or `too low`. Track the number of guesses the player takes. When the
#   player guesses the number, print out what the number was and how many guesses
#   the player needed.
# * Write a program that prompts the user for a file name, reads that file,
#   shuffles the lines, and saves it to the file "{input_name}-shuffled.txt". You
#   could create a random number using the Random class, or you could use the
#   `shuffle` method in array.

def guessing_game
	the_num = rand(1..100)
	guess_count = 0

	print "Guess a number. "

	input = nil

	while input != the_num
		guess_count += 1

		input = gets.to_i

		if the_num < input
			puts "Guess a number. #{input} is too high"
		elsif the_num > input
			puts "Guess a number. #{input} is too low"
		else
			puts "Bingo! The number is #{the_num}. You tried #{guess_count} times."
		end
	end
end

def shuffle_file
	file_name = ''

	until File.exists?(file_name)
		puts "Please input a file name."
		file_name = gets.chomp
	end

	all_lines = File.open(file_name).readlines

	all_lines.shuffle!

	f = File.new("#{file_name.sub('.txt', '')}--shuffled.txt", 'w')
	all_lines.each { |line| f.puts line }
	f.close

end