g0101_0200.s0199_binary_tree_right_side_view.readme.md Maven / Gradle / Ivy
199\. Binary Tree Right Side View
Medium
Given the `root` of a binary tree, imagine yourself standing on the **right side** of it, return _the values of the nodes you can see ordered from top to bottom_.
**Example 1:**

**Input:** root = [1,2,3,null,5,null,4]
**Output:** [1,3,4] 
**Example 2:**
**Input:** root = [1,null,3]
**Output:** [1,3] 
**Example 3:**
**Input:** root = []
**Output:** [] 
**Constraints:**
*   The number of nodes in the tree is in the range `[0, 100]`.
*   `-100 <= Node.val <= 100`    © 2015 - 2025 Weber Informatics LLC | Privacy Policy