Project Structure

LeetCode
├── Golang
└── Java

Teaching Resources

Book

• 入门书籍——《算法图解(Aditya Bhargava)》
• 基础知识——《算法(Robert Sedgewick/Kevin Wayne)》
• 理论加持——《算法导论(Thomas H. Cormen/Charles E. Leiserson)》
• 思维改善——《编程珠玑(Jon Bentley)》

Website

• List of Algorithms
• Data Structure Visualizations
• VisuAlgo
• LeetCode

Other

• https://github.com/halfrost/LeetCode-Go

• https://github.com/TheAlgorithms/Java

• https://github.com/TheAlgorithms/Python

• https://github.com/haoel/leetcode

LeetCode

NO.	Title	Solution	Difficulty	Category	Y&N
1	Two Sum	Java、Go	Easy	Array	!!!
2	Add-Two-Numbers	[Java](. /java/list/AddTwoNumbers.java)	Medium	List	?
3	Longest Substring Without Repeating Characters	Go	Medium	Two Pointers	?
5	Longest-Palindromic-Substring	Java	Medium	DP	?
8	String-To-Integer-Atoi	Java	Medium	String	?
11	Container With Most Water	Java、Go	Medium	Two Pointers	??
14	Longest-Common-Prefix	Java	Easy	String	?
15	3Sum	Java	Medium	Two Pointers	??
16	3Sum-Closest	Go	Medium	Two Pointers	?
17	Letter-Combinations-Of-A-Phone-Number	Java	Medium	Recursion	?
19	Remove-Nth-Node	Java	Medium	Two Pointers	?!
20	Valid Parentheses	Java	Easy	Stack	??!
21	Merge Two Sorted Lists	Java	Easy	Recursion	?!
22	Generate Parentheses	Java	Medium	DFS	??
24	Swap Nodes in Pairs	Java	Medium		???
25	Reverse Nodes in k-Group	Java	Hard		?
26	Remove Duplicates from Sorted Array	Java	Easy	Two Pointers	?!
32	Longest Valid Parentheses		Hard
33	Search-In-Rotated-Sorted-Array	Java	Medium		?
36	Valid-Sudoku	Java	Medium		?
37	Sudoku-Solver	Java	Hard		?
39	Combination-Sum	Java	Medium	DFS	?
42	Trapping Rain Water♥	Java	Hard	Stack、DP	!?
44	Wildcard-Matching	Java	Hard	DP	?
45	Jump-Game-ii	Java	Hard		?
46	Permutations	Java	Medium		?
47	Permutations II	Java	Medium		?
49	Group Anagrams	Java	Medium	HashMap	!?
50	PowX-N	Java	Medium		?
51	N-Queens	Java	Hard	Backtracking	?
52	N-Queens-ii		Hard
53	Maximum-Subarray	Java	Easy		!?
54	Spiral-Matrix		Medium
55	Jump-Game	Java	Medium	Greedy	?！
56	Merge-Intervals	Java	Medium		?
58	Length-Of-Last-Word	Java	Easy	String	!
59	Spiral-Matrix-ii	Java	Medium	Matrix	?
62	Unique-Paths	Java	Medium	DP	!?
63	Unique-Paths-ii	Java	Medium		?
64	Minimum Path Sum	Java	Medium		?
66	Plus One	Java	Easy		!?
69	Sqrtx	Java	Easy		!
70	Climbing-Stairs	Java	Easy		!!!
72	Edit Distance♥	Java	Hard	DP	?
74	Search-A-2d-Matrix	Java	Medium		!
75	Sort-Colors	Java	Medium	Array	!
76	Minimum Window Substring		Hard
77	Combinations	Java	Medium		?
78	Subsets	Java	Medium	Backtracking	??
79	Word-Search	Java	Medium	DFS	？
83	Remove-Duplicates-From-Sorted-List	Java	Easy		!！
84	Largest Rectangle in Histogram	Java	Hard	Stack	!?
85	Maximal-Rectangle		Hard
91	Decode Ways	Java	Medium	DP	?
88	Merge Sorted Array	Java	Easy		?!
94	Binary Tree Inorder Traversal	Java	Medium		!
98	Validate Binary Search Tree	Java	Medium		!
101	symmetric-tree		Easy	Tree	!
102	Binary Tree Level Order Traversal	Java	Medium	BFS	!??
104	Maximum Depth of Binary Tree	Java	Easy	Recursion	?!!!
105	Construct Binary Tree from Preorder and Inorder Traversal	Java	Medium		!
108	Convert Sorted Array to Binary Search Tree		Easy	Tree	?
109	Convert-Sorted-List-To-Binary-Search-Tree	Java	Medium	Tree	?
110	Balanced-Binary-Tree	Java	Easy	Tree	!??
111	Minimum Depth of Binary Tree	Java	Easy	Tree	!?
112	Path-Sum		Easy	DFS	?
113	Path-Sum-2	Java	Medium	DFS	?
115	Distinct-subsequences		Hard
120	Triangle	Java	Medium		!
121	Best-Time-To-Buy-And-Sell-Stock	Java	Easy	DP	!
122	Best-Time-To-Buy-And-Sell-Stock-ii	Java	Easy	DP、Greedy	!?
123	Best-Time-To-Buy-And-Sell-Stock-iii		Hard
125	Valid Palindrome	Java	Easy		!
126	Word-Ladder-ii	Java	Hard		?
127	Word-Ladder	Java	Hard		??
128	Longest-Consecutive-Sequence	Java	Hard	HashMap	?
130	Surrounded-Regions	Java	Medium	Disjoint Sets	?
138	Copy List with Random Pointer	Java	Medium		?
141	Linked List Cycle	Java	Easy		!!
142	Linked List Cycle II	Java	Medium		!?
144	Binary Tree Preorder Traversal	Java	Medium		!
145	Binary Tree Postorder Traversal	Java	Medium		!
146	LRU Cache	Java	Medium		!?
151	Reverse-Words-In-A-String	Java	Medium	String	?
152	Maximum-Product-Subarray	Java	Medium		!
153	Find-Minimum-In-Rotated-Sorted-Array	Java	Medium		!
155	Min Stack	Java	Easy		!
160	Intersection-Of-Two-Linked-Lists	Java	Easy		!
169	Majority-Element	Java	Easy		!
188	Best-Time-To-Buy-And-Sell-Stock-iv		Hard
189	Rotate Array	Java	Medium		!?
190	Reverse-Bits	Java	Easy	Bitwise Operation	?
191	Number-Of-1-Bits	Java	Easy	Bitwise Operation	?
198	House-Robber	Java	Medium		!
200	Number Of Islands	Java	Medium		!
230	Remove-Linked-List-Elements		Easy	List	!
206	Reverse Linked List	Java、Go	Easy	List	!?!
208	Implement-Trie-Prefix-Tree	Java	Medium	Trie	?
209	Minimum-Size-Subarray-Sum	Java	Medium	Array	?
212	Word-Search-ii		Hard	Trie
213	House-Robber-ii		Medium
217	Contains-Duplicate	Java	Easy	HashMap	!
221	Maximal Square	Java	Medium	DP	?
225	Implement Stack using Queues	Java	Easy	Stack	!
226	Invert Binary Tree	Java	Easy	Tree	!?!
231	Power-Of-Two	Java	Easy	Bitwise Operation	?
232	Implement Queue using Stacks	Java	Easy	Stack	!
234	Palindrome-Linked-List	Java	Easy		!
236	Lowest Common Ancestor of a Binary Tree	Java	Medium	Recursion	!?
239	Sliding Window Maximum	Java	Hard		!
240	Search-A-2d-Matrix-ii	Java	Medium	Line search	!
241	Different-Ways-To-Add-Parentheses	Java	Medium	Divide & Conquer	?
242	Valid Anagram	Java	Easy		!?
260	Single-Number-iii	Java	Medium	Bitwise Operation	?
279	Perfect-Squares		Medium
283	Move Zeroes	Java、Go	Easy	Array	?!
297	Serialize and Deserialize Binary Tree	Java	Hard		?
300	Longest-Increasing-Subsequence	Java	Medium	Binary Search	?
309	Best-Time-To-Buy-And-Sell-Stock-With-Cooldown		Medium
312	Burst Balloons		Hard
322	Coin-Change♥	Java	Medium	DP	!
328	Odd-Even-Linked-List	Java	Medium		?
337	House-Robber-iii	Java	Medium	Tree	?
338	Counting-Bits♥	Java	Medium	DP、Bitwise Operation	?
363	Max-Sum-Of-Rectangle-No-Larger-Than-K		Hard
367	Valid-Perfect-Square	Java	Easy		!
403	Frog Jump	Java	Hard	DP	?
378	Kth-Smallest-Element-In-A-Sorted-Matrix/	Java	Medium		?
383	Ransom-Note	Java	Easy	String	?
404	Sum-Of-Left-Leaves		Easy	Tree	!
410	Split Array Largest Sum		Hard
429	N-Ary-Tree-Level-Order-Traversal	Java	Medium		!
433	MinimumGeneticMutation	Java	Medium		!
437	Path-Sum-iii	Java	Medium	Tree	?
455	Assign-Cookies	Java	Easy		!
485	Max-Consecutive-Ones	Java	Easy		?
493	Reverse-Pairs		Hard
503	Next Greater Element II	Java	Medium		?
513	Find Bottom Left Tree Value	Java	Medium	BFS	?
515	Find-Largest-Value-In-Each-Tree-Row	Java	Medium		!
518	Coin Change 2	Java	Medium	DP	?
529	Minesweeper	Java	Medium		!
535	Encode-And-Decode-Tinyurl	Java	Medium	HashMap	?
543	Diameter-Of-Binary-Tree		Easy	Tree	??
552	Student-Attendance-Record-ii		Hard
566	Reshape-The-Matrix	Java	Easy		?
572	Subtree-Of-Another-Tree		Easy	Tree
589	N-Ary-Tree-Preorder-Traversal	Java	Easy		!
590	N-Ary-Tree-Postorder-Traversal	Java	Easy		!
594	Longest-Harmonious-Subsequence	Java	Easy	HashMap	!
617	Merge Two Binary Trees		Easy	Tree	?
621	Task-Scheduler		Medium
637	Average-Of-Levels-In-Binary-Tree		Easy	DFS/BFS	?
641	Design Circular Deque	Java	Medium		!
647	Palindromic Substrings	Java	Medium	Tree
671	Second Minimum Node In a Binary Tree		Easy	Tree	?
687	Longest Univalue Path		Medium
704	Binary-Search	Java	Easy	Binary Search	!
707	Design-LinkedList		Medium	List
709	To-Lower-Case	Java	Easy	String	?
712	Best-Time-To-Buy-And-Sell-Stock-With-Transaction-Fee		Medium
725	Split-Linked-List-In-Parts	Java	Medium		?
739	DailyTemperatures	Java	Medium	Stack	?
746	Min-Cost-Climbing-Stairs		Easy
766	Toeplitz Matrix	Java	Easy		?
773	Sliding-Puzzle		Hard
818	Race-Car		Hard
860	Lemonade-Change	Java	Easy		!
874	Walking-Robot-Simulation	Java	Easy		!
980	Unique Paths III	Java	Hard	DFS	?
1005	Maximize-Sum-Of-Array-After-K-Negations	Java	Easy	Array	?
1034	Coloring-A-Border	Java	Medium	DFS / BFS	?
1091	Shortest-Path-In-Binary-Matrix		Medium
1122	Relative-Sort-Array		Easy
1143	Longest-Common-Subsequence	Java	Medium		?
1277	Count-Square-Submatrices-With-All-Ones	Java	Medium	DP	?

剑指Offer

No.	Title	Solution	Difficulty	Category	Y&N
13	机器人的运动范围	Java	Medium	Recursion	?
26	树的子结构	Java	Medium	Recursion	??
36	二叉搜索树与双向链表		Medium
46	把数字翻译成字符串	Java	Medium	DP	?
51	数组中的逆序对	Java	Hard	Divide & Conquer	?
64	求1+2+…+n	Java	Medium	Recursion	?

! --- success ; ? --- failure .