摘要：
Given a binary tree, a target node in the binary tree, and an integer value k, print all the nodes that are at distance k from the given target node. ... 阅读全文
摘要：
Given inorder and level-order traversals of a Binary Tree, construct the Binary Tree. Following is an example to illustrate the problem.BinaryTreeInpu... 阅读全文
摘要：
Given a BST, transform it into greater sum tree where each node contains sum of all nodes greater than that node.自己想的复杂了，其实就是一个反向的inorder。新的值就是前面所有元素的... 阅读全文
摘要：
Given a very large n-ary tree. Where the root node has some information which it wants to pass to all of its children down to the leaves with the cons... 阅读全文