Codice Gray: differenze tra le versioni

Versione delle 23:53, 19 gen 2007

Versione delle 21:31, 21 gen 2007

Riga 104:

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== Implementazione in linguaggio Python ==

<pre>

_xor = {("0", "0"): "0",

("0", "1"): "1",

("1", "0"): "1",

("1", "1"): "0"}

def tograystr(binary):

prec = binary[0]

result = prec

for el in binary[1:]:

result += _xor[el, prec]

prec = el

return result

def tobinarystr(gray):

result = gray[0]

prec = result

for el in gray[1:]:

prec = _xor[prec, el]

result += prec

return result

</pre>

Esempio d'uso dalla shell Python:

<pre>

>>> bins = ['000', '001', '010', '011', '100', '101', '110', '111']

>>> grays = [tograystr(b) for b in bins]

>>> grays

['000', '001', '011', '010', '110', '111', '101', '100']

>>> [tobinarystr(g) for g in grays]

['000', '001', '010', '011', '100', '101', '110', '111']

</pre>

== Voci correlate ==

*[[Storia dei charset]]