mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
45 lines
910 B
HTML
45 lines
910 B
HTML
|
<p>输入一棵二叉树的根节点，判断该树是不是平衡二叉树。如果某二叉树中任意节点的左右子树的深度相差不超过1，那么它就是一棵平衡二叉树。</p>
|
|||
|
|
|
|||
|
|
<p> </p>
|
|||
|
|
|
|||
|
|
<p><strong>示例 1:</strong></p>
|
|||
|
|
|
|||
|
|
<p>给定二叉树 <code>[3,9,20,null,null,15,7]</code></p>
|
|||
|
|
|
|||
|
|
<pre>
|
|||
|
|
3
|
|||
|
|
/ \
|
|||
|
|
9 20
|
|||
|
|
/ \
|
|||
|
|
15 7</pre>
|
|||
|
|
|
|||
|
|
<p>返回 <code>true</code> 。<br />
|
|||
|
|
<br />
|
|||
|
|
<strong>示例 2:</strong></p>
|
|||
|
|
|
|||
|
|
<p>给定二叉树 <code>[1,2,2,3,3,null,null,4,4]</code></p>
|
|||
|
|
|
|||
|
|
<pre>
|
|||
|
|
1
|
|||
|
|
/ \
|
|||
|
|
2 2
|
|||
|
|
/ \
|
|||
|
|
3 3
|
|||
|
|
/ \
|
|||
|
|
4 4
|
|||
|
|
</pre>
|
|||
|
|
|
|||
|
|
<p>返回 <code>false</code> 。</p>
|
|||
|
|
|
|||
|
|
<p> </p>
|
|||
|
|
|
|||
|
|
<p><strong>限制：</strong></p>
|
|||
|
|
|
|||
|
|
<ul>
|
|||
|
|
<li><code>0 <= 树的结点个数 <= 10000</code></li>
|
|||
|
|
</ul>
|
|||
|
|
|
|||
|
|
<p>注意：本题与主站 110 题相同：<a href="https://leetcode-cn.com/problems/balanced-binary-tree/">https://leetcode-cn.com/problems/balanced-binary-tree/</a></p>
|
|||
|
|
|
|||
|
|
<p> </p>
|