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24 lines
682 B
HTML
24 lines
682 B
HTML
<p>输入一棵二叉树的根节点，求该树的深度。从根节点到叶节点依次经过的节点（含根、叶节点）形成树的一条路径，最长路径的长度为树的深度。</p>
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<p>例如：</p>
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<p>给定二叉树 <code>[3,9,20,null,null,15,7]</code>，</p>
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<pre> 3
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/ \
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9 20
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/ \
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15 7</pre>
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<p>返回它的最大深度 3 。</p>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ol>
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<li><code>节点总数 <= 10000</code></li>
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</ol>
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<p>注意：本题与主站 104 题相同：<a href="https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/">https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/</a></p>
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