Liang Tan
LeetCode 863 All nodes distance k in binary tree LeetCode 863 All nodes distance k in binary tree
1. Problem DescriptionWe are given a binary tree (with root node root), a target node, and an integer value K. Return a
2019-07-16 Liang Tan
Recursion Data Structure and Algorithm Tree Undirected Graph Breath-First Search(BFS) Queue
Leetcode 1104 Path in Zigzag Labelled Binary Tree Leetcode 1104 Path in Zigzag Labelled Binary Tree
1. Problem DescriptionIn an infinite binary tree where every node has two children, the nodes are labelled in row order.
2019-07-02 Liang Tan
Recursion Data Structure and Algorithm Complete Binary Tree ZigZag Math
Leetcode problem 1105 filling-bookcase-shelves Leetcode problem 1105 filling-bookcase-shelves
Problem DescriptionWe have a sequence of books: the i-th book has thickness books[i][0] and height books[i][1]. We want
2019-07-02 Liang Tan
Data Structure and Algorithm Dynamic programming backtracking Depth-first Search (DFS) memorization
Implements a mini Spring Framework Implements a mini Spring Framework
I have been using Spring framework to build my own projects for several time. In order to have a deeper understanding of
2019-06-26 Liang Tan
Spring MVC Web Server Gradle Java reflection Annotation Thread PostMan API
Design Pattern factory_pattern Design Pattern factory_pattern
Let’s first look at how java use the factory method.At beginning, in order to unify all the manipulations on different S
2019-06-19 Liang Tan
OOD Design Pattern Factory Method Java Source Code Abstract Factory JDBC
Import RDF files to Neo4j database Import RDF files to Neo4j database
1. IntroductionIn this blog, I will introduce how to import RDF(Resource Description Framework) files to graph database
2019-05-23 Liang Tan
NoSQL XML RDF Neo4j dom4j java
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