Question

Can anyone please tell me what I should be using and why this method isn’t correct? The code doesn’t work, I know, I just want to know how I can interface with the array for this type of thing.

Thank you.

Code:

$i = 1
$f = 0
$c = 0
answer = ""

loop do
    puts "Welcome\n"
    puts "If you'd like to fly in first class, Press 1. For coach, Push 2."
    answer = STDIN.gets
    answer.chop!
    break if answer =~ /1|2/  

    if answer == 1 then
      $i += 1.each
      $available.at(0..4)
    end

    if answer == 2 then
     $i += 1.each
     $available.at(5..19)

    else
      puts "Invalid number, enter 1 or 2."
      Console_Screen.pause
  end
end

puts "Here is your boarding pass. You are in seat " + $i.to_s

Answer 1

For first class, you can do something like this:

next_first = (0..4).find { |i| $available[i] != 1 }

If that gives you a next_available that is nil then first class is full, otherwise you have the index of the next available first class seat.

Similarly for coach:

next_coach = (5..19).find { |i| $available[i] != 1 }

Then once you have the index, have checked that it isn’t nil, and stored it in $i, just $available[$i] = 1 to reserve the seat.

And an extra hint for free, this:

answer = STDIN.gets
answer.chop!

leaves a string in answer so answer == 1 will always be false.

References:

• Enumerable#find