LeetCode

Keep practicing algorithm problems

Data Structure

Linear Data Structure

String

Catagory	#	Title	Solution
Addition	415	Add Strings	https://github.com/QiluHuang/LeetCode/blob/master/main/dString/Addition.java
Validation	-	Currency Recognition

Array

Category	#	Title	Solution
Two Sum变形	-	Array Sum

LinkedList

Stacks

Queeus

Hash Tables

Non-Linear Data Structure

Trees

Heaps

Graphs

Algorithms

Searching Algorithms

Sorting Algorithms

String Manipulation Algorithms

Recursion

Backtracking

Problems are catagorized by the input parameters

Catagory	#	Title	Solution
int	22	Generate Parentheses	https://github.com/QiluHuang/LeetCode/blob/master/main/aBacktracking/GenerateParentheses.java
Array	46	Permutations	https://github.com/QiluHuang/LeetCode/blob/master/main/aBacktracking/Permutations.java
Array	77	Combinations	https://github.com/QiluHuang/LeetCode/blob/master/main/aBacktracking/Combination.java
Array	78	Subsets	https://github.com/QiluHuang/LeetCode/blob/master/main/aBacktracking/SubSet.java

Breadth-First Search

Category	#	Title	Solution
String	127	WordLadder
2D array	773	Sliding Puzzle