Thanks for all the replies - you are very nice people!
Don't worry Jeff, I assumed you weren't telling me what 1*1 equals! I
got your point.
James Stroud impressively got to the heart of what I was trying to do -
which was just to wrap up the code here:
en.wikipedia.org/wiki/Fibonacci_number_program#Matrix_equation
in object-oriented fashion but without too much overhead - I appreciate
you taking the time James! Thanks.
I managed to do what i wanted with the code below, though there's
definitely a lack of understanding on my part with respect to how
Python works - binding/re-binding? - that I'll have to study.
Cheers 'n' all
class FibonacciMatrix:
def __init__( self ):
self.a = 1
self.b = 1
self.c = 0
def Copy( self ):
copy = FibonacciMatrix()
copy.a = self.a
copy.b = self.b
copy.c = self.c
return copy
def __mul__( self, other ):
result = FibonacciMatrix()
result.a = self.a * other.a + self.b * other.b
result.b = self.a * other.b + self.b * other.c
result.c = self.b * other.b + self.c * other.c
return result
def __pow__( self, N ):
if N == 1:
return self
if N & 1 == 0:
return pow( self * self, N/2 )
else:
return self * pow( self * self, (N-1)/2 )
A = FibonacciMatrix() ** 8
print '------------------------------'
print A.a
--
http://mail.python.org/mailman/listinfo/python-list
