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20 lines
501 B
HTML
20 lines
501 B
HTML
<p>Given a binary tree, design an algorithm which creates a linked list of all the nodes at each depth (e.g., if you have a tree with depth D, you'll have D linked lists). Return a array containing all the linked lists.</p>
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<p> </p>
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<p><strong>Example: </strong></p>
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<pre>
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<strong>Input: </strong>[1,2,3,4,5,null,7,8]
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1
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/ \
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2 3
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/ \ \
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4 5 7
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/
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8
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<strong>Output: </strong>[[1],[2,3],[4,5,7],[8]]
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</pre>
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