New Features in Python 1.6

Amit Patel amitp at Xenon.Stanford.EDU
Wed Apr 5 04:42:45 CEST 2000


 Philip 'Yes, that's my address' Newton <nospam.newton at gmx.li> wrote:
| 
| Yes? I challenge you to provide any algorithm that will strip away one
| bit from the four sequences 11, 10, 01, and 00, while still being able
| to restore the previous state. (Unless you were talking about lossy
| compression, in which case you might as well say "my compression
| algorithm just drops off the leftmost bit" or similar, which will
| *always* compress any non-empty file.)
| 

Okay:

  def compress(s):
    if s=='11':    return '11'
    elif s=='10':  return '1'
    elif s=='01':  return '0'
    elif s=='00':  return ''

  def uncompress(s):
    if s=='11':    return '11'
    elif s=='1':   return '10'
    elif s=='0':   return '01'
    elif s=='':    return '00'

Oh, maybe that doesn't count.  <0.5wink>

   -implicit-lengths-are-fun-ly y'rs, Amit




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