文章 2017-12-13 来自:开发者社区

[LeetCode] Find Leaves of Binary Tree 找二叉树的叶节点

Given a binary tree, find all leaves and then remove those leaves. Then repeat the previous steps until the tree is empty. Example: Given binary tree  1 / \ 2 3 / \ 4 5 Returns [4, 5, 3...

文章 2017-12-10 来自:开发者社区

[LeetCode] Find Mode in Binary Search Tree 找二分搜索数的众数

Given a binary search tree (BST) with duplicates, find all the mode(s) (the most frequently occurred element) in the given BST. Assume a BST is defined as follows: The left subtree of a node...

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