collatz

gistfile1.txt

def collatz_calculate n
  if n.even?
    return n/2            #if n is even, divide it by 2
  elsif n.odd?
    return (3 * n) + 1    #if n is odd, multiply it by 3 and add 1
  end
end


def collatz n
  collatz_array = [n]
  until collatz.array.last == 1       #until the last number in the array is 1, loop
    collatz_array << collatz_calculate(collatz.array.last)
  end
  puts collatz_array                  #by now the last number should be 1
  end


collatz 13