ruby: entrada y salida estándar

README.md

Ruby STDIN/STDOUT

cat in.txt | ruby stdin_stdout.rb > out.txt

ruby stdin_stdout.rb < in.txt > out.txt

in.txt

3
1 2 3
11
10
5
0 9 8 7 6

out.txt

[["1", "2", "3"]]
[["1", "2", "3"], "error"]
[["1", "2", "3"], "error", ["0", "9", "8", "7", "6"]]

stdin_stdout.rb

# $stdin/$stdout son de la clase File
# STDIN/STDOUT

array = []

=begin
until (linea = $stdin.gets).nil?
  next if linea.is_a? Numeric

  linea = linea.to_i
  str = $stdin.gets.split(' ')

  if str.size == linea
    array.push(str)
  else
    array.push('error')
  end
  $stdout.puts array.to_s
end
=end

until (linea = STDIN.gets).nil?
  next if linea.is_a? Numeric

  linea = linea.to_i
  str = STDIN.gets.split(' ')

  if str.size == linea
    array.push(str)
  else
    array.push('error')
  end
  STDOUT.puts array.to_s
end

# input
=begin
3
1 2 3
11
10
5
0 9 8 7 6
=end

# output
=begin
[["1", "2", "3"]]
[["1", "2", "3"], "error"]
[["1", "2", "3"], "error", ["0", "9", "8", "7", "6"]]
=end