mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
32 lines
945 B
HTML
32 lines
945 B
HTML
<p>Given the <code>root</code> of a binary tree, imagine yourself standing on the <strong>right side</strong> of it, return <em>the values of the nodes you can see ordered from top to bottom</em>.</p>
|
|
|
|
<p> </p>
|
|
<p><strong class="example">Example 1:</strong></p>
|
|
<img alt="" src="https://assets.leetcode.com/uploads/2021/02/14/tree.jpg" style="width: 401px; height: 301px;" />
|
|
<pre>
|
|
<strong>Input:</strong> root = [1,2,3,null,5,null,4]
|
|
<strong>Output:</strong> [1,3,4]
|
|
</pre>
|
|
|
|
<p><strong class="example">Example 2:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> root = [1,null,3]
|
|
<strong>Output:</strong> [1,3]
|
|
</pre>
|
|
|
|
<p><strong class="example">Example 3:</strong></p>
|
|
|
|
<pre>
|
|
<strong>Input:</strong> root = []
|
|
<strong>Output:</strong> []
|
|
</pre>
|
|
|
|
<p> </p>
|
|
<p><strong>Constraints:</strong></p>
|
|
|
|
<ul>
|
|
<li>The number of nodes in the tree is in the range <code>[0, 100]</code>.</li>
|
|
<li><code>-100 <= Node.val <= 100</code></li>
|
|
</ul>
|