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26 lines
833 B
HTML
26 lines
833 B
HTML
<p>T1 and T2 are two very large binary trees. Create an algorithm to determine if T2 is a subtree of T1.</p>
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<p>A tree T2 is a subtree of T1 if there exists a node n in T1 such that the subtree of n is identical to T2. That is, if you cut off the tree at node n, the two trees would be identical.</p>
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<p><strong>Note:</strong> This problem is slightly different from the original problem.</p>
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<p><strong>Example1:</strong></p>
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<pre>
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<strong> Input</strong>: t1 = [1, 2, 3], t2 = [2]
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<strong> Output</strong>: true
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</pre>
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<p><strong>Example2:</strong></p>
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<pre>
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<strong> Input</strong>: t1 = [1, null, 2, 4], t2 = [3, 2]
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<strong> Output</strong>: false
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</pre>
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<p><strong>Note: </strong></p>
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<ol>
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<li>The node numbers of both tree are in [0, 20000].</li>
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</ol>
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