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33 lines
1.5 KiB
HTML
33 lines
1.5 KiB
HTML
<p>Consider all the leaves of a binary tree, from left to right order, the values of those leaves form a <strong>leaf value sequence</strong><em>.</em></p>
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<p><img alt="" src="https://s3-lc-upload.s3.amazonaws.com/uploads/2018/07/16/tree.png" style="width: 400px; height: 336px;" /></p>
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<p>For example, in the given tree above, the leaf value sequence is <code>(6, 7, 4, 9, 8)</code>.</p>
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<p>Two binary trees are considered <em>leaf-similar</em> if their leaf value sequence is the same.</p>
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<p>Return <code>true</code> if and only if the two given trees with head nodes <code>root1</code> and <code>root2</code> are leaf-similar.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2020/09/03/leaf-similar-1.jpg" style="width: 600px; height: 237px;" />
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<pre>
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<strong>Input:</strong> root1 = [3,5,1,6,2,9,8,null,null,7,4], root2 = [3,5,1,6,7,4,2,null,null,null,null,null,null,9,8]
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<strong>Output:</strong> true
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</pre>
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<p><strong>Example 2:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2020/09/03/leaf-similar-2.jpg" style="width: 300px; height: 110px;" />
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<pre>
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<strong>Input:</strong> root1 = [1,2,3], root2 = [1,3,2]
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<strong>Output:</strong> false
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li>The number of nodes in each tree will be in the range <code>[1, 200]</code>.</li>
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<li>Both of the given trees will have values in the range <code>[0, 200]</code>.</li>
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</ul>
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