Module leetcode_for_rust::cd0102_binary_tree_level_order_traversal

Binary Tree Level Order Traversalleetcode: binary_tree_level_order_traversal

Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).

For example: Given binary tree [3,9,20,null,null,15,7],

    3
   / \
  9  20
    /  \
   15   7

return its level order traversal as:

[
  [3],
  [9,20],
  [15,7]
]

Structs

TreeNode

Functions

level_order

Solutions