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"translatedContent": "<p>实现一个函数,检查二叉树是否平衡。在这个问题中,平衡树的定义如下:任意一个节点,其两棵子树的高度差不超过 1。</p><br><strong>示例 1:</strong><pre>给定二叉树 [3,9,20,null,null,15,7]<br> 3<br> / \<br> 9 20<br> / \<br> 15 7<br>返回 true 。</pre><strong>示例 2:</strong><br><pre>给定二叉树 [1,2,2,3,3,null,null,4,4]<br> 1<br> / \<br> 2 2<br> / \<br> 3 3<br> / \<br>4 4<br>返回 false 。</pre>",
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"isPaidOnly": false,
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"difficulty": "Easy",
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"likes": 80,
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"likes": 81,
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"similarQuestions": "[]",
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@@ -149,7 +149,7 @@
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"__typename": "CodeSnippetNode"
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}
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],
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"stats": "{\"totalAccepted\": \"37.6K\", \"totalSubmission\": \"63.8K\", \"totalAcceptedRaw\": 37612, \"totalSubmissionRaw\": 63834, \"acRate\": \"58.9%\"}",
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"hints": [
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"考虑平衡树的定义。你可以检查单个节点的条件吗?你可以检查每个节点吗?",
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"如果你开发了一个蛮力解法,请注意它的运行时间。如果你是用于计算每个节点的子树的高度,那么该算法会很低效。",
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