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<p>给你两棵二叉树的根节点 <code>p</code><code>q</code> ,编写一个函数来检验这两棵树是否相同。</p><p>如果两个树在结构上相同,并且节点具有相同的值,则认为它们是相同的。</p><p> </p><p><strong>示例 1:</strong></p><img alt="" src="https://cdn.jsdelivr.net/gh/doocs/leetcode@main/solution/0100-0199/0100.Same%20Tree/images/ex1.jpg" style="width: 622px; height: 182px;" /><pre><strong>输入:</strong>p = [1,2,3], q = [1,2,3]<strong><br />输出:</strong>true</pre><p><strong>示例 2:</strong></p><img alt="" src="https://cdn.jsdelivr.net/gh/doocs/leetcode@main/solution/0100-0199/0100.Same%20Tree/images/ex2.jpg" style="width: 382px; height: 182px;" /><pre><strong>输入:</strong>p = [1,2], q = [1,null,2]<strong><br />输出:</strong>false</pre><p><strong>示例 3:</strong></p><img alt="" src="https://cdn.jsdelivr.net/gh/doocs/leetcode@main/solution/0100-0199/0100.Same%20Tree/images/ex3.jpg" style="width: 622px; height: 182px;" /><pre><strong>输入:</strong>p = [1,2,1], q = [1,1,2]<strong><br />输出:</strong>false</pre><p> </p><p><strong>提示:</strong></p><ul>	<li>两棵树上的节点数目都在范围 <code>[0, 100]</code></li>	<li><code>-10<sup>4</sup> <= Node.val <= 10<sup>4</sup></code></li></ul>