sorry i think that i express wrong. having problem with english
what i mean is how python knows to add all thing at the end of recursion
>>> def f(l):
if l == []:
return []
else:
return f(l[1:]) + l[:1]
f([1,2,3])
recursion1 f([2,3]) + [1]
recursion2 f([3]) + [2] or [2, 1]?
recursion3 f([]) + [3] or [3, 2, 1]
i dont get all this
>>> def f(l):
if l == []:
print l
return []
else:
return f(l[1:]) + l[:1]
>>> f([1,2,3])
[]
[3, 2, 1] # how this come here? how python save variables from each recursion?
sorry again for first post
thanks
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