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题目： Given a binary tree, flatten it to a linked list in-place. For example,Given The flattened tree should look like: click to show hints. Hints: If y 阅读全文
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DescriptionGiven a binary tree, find the subtree with maximum average. Return the root of the subtree.NoticeLintCode will print the subtree which root 阅读全文
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DescriptionGiven a binary tree, find the subtree with minimum sum. Return the root of the subtree.NoticeLintCode will print the subtree which root is 阅读全文
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题目： Given a binary tree, find the length of the longest consecutive sequence path. The path refers to any sequence of nodes from some starting node to 阅读全文