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Python Help (basic)

  • 28-03-2014 9:05pm
    #1
    wolfyboy555
    Registered Users, Registered Users 2 Posts: 1,453 ✭✭✭


    Hi,

    I am stuck on a python exercise that has me stumped. What I want to do is get the user to enter a number and then generate a 'collatz sequence' based on this. Then I want to put this sequence into a list.

    I have the first bit ok (I think)

    x = int(input())
    while x != 1:
    if x % 2 == 0:
    x = x/2
    print(x)
    else:
    x =3*x + 1
    print(x)

    So if I enter 3,

    10
    5.0
    16.0
    8.0
    4.0
    2.0
    1.0

    will appear on the screen.

    But how do I get these into a list?


Comments

  • #2
    padraig_f
    Registered Users, Registered Users 2 Posts: 3,323 ✭✭✭padraig_f 


    [B]sequence = []
[/B]x = int(input())
while x != 1:
   if x % 2 == 0:
      x = x/2
      print(x)
   else:
      x =3*x + 1
      print(x)
   [b]sequence.append(x)[/b]

[B]print 'sequence: {0}'.format(sequence)
[/B]

    Added lines in bold.


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