same-tree

Same Tree

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isSameTree

Given the roots of two binary trees <code>p</code> and <code>q</code>, write a function to check if they are the same or not.

Two binary trees are considered the same if they are structurally identical, and the nodes have the same value.

&nbsp;
Example 1:
<img alt="" src="https://assets.leetcode.com/uploads/2020/12/20/ex1.jpg" style="width: 622px; height: 182px;" />
<pre>
Input: p = [1,2,3], q = [1,2,3]
Output: true
</pre>

Example 2:
<img alt="" src="https://assets.leetcode.com/uploads/2020/12/20/ex2.jpg" style="width: 382px; height: 182px;" />
<pre>
Input: p = [1,2], q = [1,null,2]
Output: false
</pre>

Example 3:
<img alt="" src="https://assets.leetcode.com/uploads/2020/12/20/ex3.jpg" style="width: 622px; height: 182px;" />
<pre>
Input: p = [1,2,1], q = [1,1,2]
Output: false
</pre>

&nbsp;
Constraints:

<ul>
	<li>The number of nodes in both trees is in the range <code>[0, 100]</code>.</li>
	<li><code>-104 &lt;= Node.val &lt;= 104</code></li>
</ul>

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