摘要：
原题链接在这里：http://www.lintcode.com/en/problem/subtree/ You have two every large binary trees: T1, with millions of nodes, and T2, with hundreds of nodes. 阅读全文
摘要：
原题链接在这里：https://leetcode.com/problems/count-univalue-subtrees/ 题目： Given a binary tree, count the number of uni-value subtrees. A Uni-value subtree me 阅读全文
摘要：
原题链接在这里：https://leetcode.com/problems/largest-bst-subtree/ 题目： Given a binary tree, find the largest subtree which is a Binary Search Tree (BST), wher 阅读全文