"karma" <dorjeta...@googlemail.com> wrote
thinking that a recursive solution would work here, but so far I can't
quite get it working. This is what I have so far:
Can someone suggest whether this is suited to a recursive solution and
Yes certainly
if so, what am I doing wrong.
L = ['a',
['b',
['d', [], [] ],
['e', [], [] ]
],
['c',
['f', [], [] ],
[]
]
]
def printTree(L):
for i in L:
if isinstance(i,str):
print 'Root: ', i
else:
print '--Subtree: ', i
printTree(i)
printTree(L)
Root: a
--Subtree: ['b', ['d', [], []], ['e', [], []]]
Root: b
--Subtree: ['d', [], []]
Root: d
--Subtree: []
--Subtree: []
This is the end of the recursive call to printTree( ['d', [ [], [] ] ]
--Subtree: ['e', [], []] # this shouldn't be here
This is the next element in printTree( ['d', [], []], ['e', [], []] )
Root: e
This is the start of printTree( ['e', [], [] ] )
--Subtree: []
--Subtree: []
Now why do you think the line you highlighted is an error?
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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