package
Version:
v0.0.0-...-d3fc627
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Published: Feb 15, 2020
License: MIT
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Imports: 1
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Imported by: 0
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README
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题目
Given a binary tree, return the preorder traversal of its nodes' values.
For example:
Given binary tree {1,#,2,3},
1
\
2
/
3
return [1,2,3].
Note: Recursive solution is trivial, could you do it iteratively?
解题思路
见程序注释
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