[−][src]Module leetcode_for_rust::cd0144_binary_tree_preorder_traversal
Binary Tree Preorder Traversalleetcode: binary_tree_preorder_traversal
Given a binary tree, return the preorder traversal of its nodes' values.
Example:
Input: [1,null,2,3]
1
\
2
/
3
Output: [1,2,3]
Follow up: Recursive solution is trivial, could you do it iteratively?
Structs
TreeNode |
Functions
preorder_traversal | Solutions |