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34 lines
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34 lines
1.2 KiB
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<p>给定两棵二叉树 <code>tree1</code> 和 <code>tree2</code>,判断 <code>tree2</code> 是否以 <code>tree1</code> 的某个节点为根的子树具有 <strong>相同的结构和节点值</strong> 。<br />
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注意,<strong>空树 </strong>不会是以 <code>tree1</code> 的某个节点为根的子树具有 <strong>相同的结构和节点值</strong> 。</p>
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<p> </p>
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<p><strong>示例 1:</strong></p>
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<p> </p>
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<p><img alt="" src="https://pic.leetcode.cn/1694684670-vwyIgY-two_tree.png" /></p>
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<p> </p>
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<pre>
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<strong>输入:</strong>tree1 = [1,7,5], tree2 = [6,1]
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<strong>输出:</strong>false
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<strong>解释:</strong>tree2 与 tree1 的一个子树没有相同的结构和节点值。
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</pre>
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<p><strong>示例 2:</strong></p>
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<p><img alt="" src="https://pic.leetcode.cn/1694685602-myWXCv-two_tree_2.png" /></p>
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<pre>
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<strong>输入:</strong>tree1 = [3,6,7,1,8], tree2 = [6,1]
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<strong>输出:</strong>true
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<strong>解释:</strong>tree2 与 tree1 的一个子树拥有相同的结构和节点值。即 6 - > 1。</pre>
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<p> </p>
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<p><strong>提示:</strong></p>
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<p><code>0 <= 节点个数 <= 10000</code></p>
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