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an algorithm question on tree

an algorithm question on tree# Programming - 葵花宝典

h*d2006-08-17 07:08

1 楼

write an O(n) nonrecursive procedure that, given an n-node binary tree,
prints out the key of each node. Use no more than constant extra space
outside of the tree itself and do not modify the tree, even temporarily,
during the procedure.

S*t2006-08-17 07:08

2 楼

any trick here?

【在 h*********d 的大作中提到】

: write an O(n) nonrecursive procedure that, given an n-node binary tree,
: prints out the key of each node. Use no more than constant extra space
: outside of the tree itself and do not modify the tree, even temporarily,
: during the procedure.