LeetCode

#	No.	Title	C++	Python	Topics	Difficulty	Date
1	101	Symmetric Tree	c++	python	bfs	E	2019/04/09
2	279	Perfect Squares	c++	python	bfs	M	2019/04/09
3	62	Unique Paths	c++	python	dp	M	2019/04/15
4	63	Unique Paths II	c++	python	dp	M	2019/04/15
5	980	Unique Paths III	c++	python	dfs+backtracking	H	2019/04/15
6	5	Longest Palindromic Substring	c++	python	dp/expand around center	M	2019/04/15
7	300	Longest Increasing Subsequence	c++	python	dp/dp with binarysearch	M	2019/04/16
8	191	Number of 1 Bits	c++	python	bit manipulation	E	2019/04/16
9	338	Counting Bits	c++	python	brute force/dp	M	2019/04/16
10	64	Minimum Path Sum	c++	python	dp	M	2019/04/16
11	174	Dungeon Game	c++	python	dp	H	2019/04/17
12	121	Best Time to Buy and Sell Stock	c++	python	dp	E	2019/04/17
13	122	Best Time to Buy and Sell Stock II	c++	python	greedy	E	2019/04/17
14	123	Best Time to Buy and Sell Stock III	c++	python	dp	H	2019/04/18
15	188	Best Time to Buy and Sell Stock IV	c++	python	dp	H	2019/04/18
16	96	Unique Binary Search Trees	c++	python	dp	M	2019/04/19
17	95	Unique Binary Search Trees II	c++	python	dfs/dp	M	2019/04/19
18	120	Triangle	c++	python	dp	M	2019/04/22
19	98	Validate Binary Search Tree	c++	python	dfs	M	2019/04/22
20	99	Recover Binary Search Tree	c++	python	dfs	H	2019/04/24
21	100	Same Tree	c++	python	dfs	E	2019/04/24
22	104	Maximum Depth of Binary Tree	c++	python	dfs/bfs	E	2019/04/25
23	105	Construct Binary Tree from Preorder and Inorder Traversal	c++	python	dfs	M	2019/04/25
24	106	Construct Binary Tree from Inorder and Postorder Traversal	c++	python	dfs	M	2019/04/26
25	153	Find Minimum in Rotated Sorted Array	c++	python	binary search	M	2019/04/28
26	72	Edit Distance	c++	python	dp	H	2019/05/21
27	1190	Reverse Substrings Between Each Pair of Parentheses	c++	python	stack	M	2019/09/17
28	10	Regular Expression Matching	c++	python	双序列dp	H	2019/09/18
29	1191	K-Concatenation Maximum Sum	c++	python	array	M	2019/09/19
30	239	Sliding Window Maximum	c++	python	array	H	2019/09/19
31	69	Sqrt(x)	c++	python	binary search	E	2019/09/20
32	480	Sliding Window Median	c++	python	insert sort	H	2019/09/22
33	44	Wildcard Matching	c++	python	双序列dp	H	2019/09/26
34	21	Merge Two Sorted Lists	c++	python	two pointers	E	2019/09/27
35	23	Merge k Sorted Lists	c++	python	priority queue/merge sort	H	2019/09/27
36	778	Swim in Rising Water	c++	python	priority queue/binary search	H	2019/09/28
37	252	Meeting Rooms	c++	python	array	E	2019/09/28
38	253	Meeting Rooms II	c++	python	hashmap	M	2019/09/29
39	1202	Smallest String With Swaps	c++	python	graph	M	2019/09/30
40	42	Trapping Rain Water	c++	python	two pointers	H	2019/09/30
41	287	Find the Duplicate Number	c++	python	binary search	M	2019/10/01
42	56	Merge Intervals	c++	python	binary search	M	2019/10/02
43	57	Insert Interval	c++	python	binary search	H	2019/10/02
44	149	Max Pointson a Line	c++	python	map	H	2019/10/03
45	684	Redundant Connection	c++	python	union find	M	2019/10/04
46	547	Friend Circles	c++	python	union find/dfs	M	2019/10/05
47	148	Sort List	c++	python	merge sort	M	2019/10/05
48	5099	Valid Palindrome III	c++	python	dp	H	2019/10/06
49	5213	Play with Chips	c++	python	array	E	2019/10/06
50	5214	Longest Arithmetic Subsequence of Given Difference	c++	python	dp	M	2019/10/06
51	5215	Path wit hMaximum Gold	c++	python	dfs	M	2019/10/07
52	5216	Count Vowels Permutation	c++	python	dp	H	2019/10/07
53	207	Course Schedule	c++	python	dfs/bfs/拓扑排序	M	2019/10/08
54	210	Course Schedule II	c++	python	dfs/bfs/拓扑排序	M	2019/10/08
55	630	Course Schedule III	c++	python	greedy	H	2019/10/09
56	875	Koko Eating Bananas	c++	python	binary search	M	2019/10/10
57	103	Binary Tree Zigzag LevelOrder Traversal	c++	python	bfs+tree	M	2019/10/10
58	5073	Minimum Knight Moves	c++	python	bfs	M	2019/10/11
59	125	Valid Palindrome	c++	python	two pointers	E	2019/10/11
60	680	Valid Palindrome II	c++	python	two pointers	E	2019/10/12
61	17	Letter Combinations of a Phone Number	c++	python	backtracking	M	2019/10/14
62	39	Combination Sum	c++	python	backtracking	M	2019/10/14
63	130	Surrounded Regions	c++	python	dfs	M	2019/10/15
64	474	Ones and Zeroes	c++	python	双序列dp	M	2019/10/16
65	129	Sum Root to Leaf Numbers	c++	python	dfs	M	2019/10/17
66	198	House Robber	c++	python	dp	E	2019/10/18
67	213	House Robber II	c++	python	dp	M	2019/10/18
68	337	House Robber III	c++	python	dfs+dp	M	2019/10/18
69	303	Range Sum Query - Immutable	c++	python	dp	E	2019/10/19
70	392	Is Subsequence	c++	python	dp	E	2019/10/20
71	309	Best Time to Buy and Sell Stock with Cooldown	c++	python	dp	M	2019/10/21
72	714	Best Time to Buy and Sell Stock with Transaction Fee	c++	python	dp	M	2019/10/22
73	152	Maximum Product Subarray	c++	python	dp	M	2019/10/22
74	5238	Find Positive Integer Solution for a Given Equation	c++	python	other	E	2019/10/26
75	5239	Circular Permutation in Binary Representation	c++	python	dfs+backtrack	M	2019/10/27
76	5240	Maximum Length of a Concatenated String with Unique Characters	c++	python	dfs+backtrack	M	2019/10/28
77	918	Maximum Sum Circular Subarray	c++	python	array	M	2019/10/29
78	827	Making A Large Island	c++	python	dfs	M	2019/10/30
79	221	Maximal Square	c++	python	dp	M	2019/10/31
80	84	Largest Rectangle in Histogram	c++	python	stack	H	2019/11/01
81	115	Distinct Subsequences	c++	python	双序列dp	H	2019/11/02
82	206	Reverse LinkedList	c++	python	linklist	E	2019/11/03
83	322	Coin Change	c++	python	dp	M	2019/11/04
84	1248	Count Number of Nice Subarrays	c++	python	array	M	2019/11/05
85	131	Palindrome Partitioning	c++	python	dfs+backtrack	M	2019/11/06
86	78	Subsets	c++	python	dfs+backtrack	M	2019/11/07
87	90	Subsets II	c++	python	dfs+backtrack	M	2019/11/08
88	40	Combination Sum II	c++	python	dfs+backtrack	M	2019/11/09
89	46	Permutations	c++	python	dfs+backtrack	M	2019/11/10
90	47	Permutations II	c++	python	dfs+backtrack	M	2019/11/11
91	110	Balanced Binary Tree	c++	python	tree	E	2019/11/12
92	102	Binary Tree Level Order Traversal	c++	python	tree	M	2019/11/13
93	111	Minimum Depth of Binary Tree	c++	python	dfs+tree	E	2019/11/14
94	148	Sort List	c++	python	linklist	M	2019/11/15
95	286	Walls and Gates	c++	python	dfs+bfs	M	2019/11/16
96	296	Best Meeting Point	c++	python	array	H	2019/11/16
97	1101	The Earliest Moment When Everyone Become Friends	c++	python	unionfind	M	2019/11/17
98	1262	Greatest Sum Divisible by Three	c++	python	array	M	2019/11/18
99	33	Search in Rotated Sorted Array	c++	python	binary search	M	2019/11/19
100	215	Kth Largest Element in an Array	c++	python	binary search	M	2019/11/20
101	222	Count Complete TreeNodes	c++	python	tree/dfs	M	2019/11/21
102	479	Largest Palindrome Product	c++	python		H	2019/11/22
103	316	Remove Duplicate Letters	c++	python	stack	H	2019/11/23
104	186	Reverse Words in a String II	c++	python	string	M	2019/11/24
105	181	Employees Earning More Than Their Managers	c++	sql	sql	E	2019/11/25
106	60	Permutation Sequence	c++	python	dfs+剪枝	M	2019/11/26
107	80	Remove Duplicates from Sorted Array II	c++	python	two pointers	M	2019/11/27
108	945	Minimum Increment to Make Array Unique	c++	python	array	M	2019/11/28
109	470	Implement Rand10() Using Rand7()	c++	python	math	M	2019/11/28
110	41	First Missing Positive	c++	python	array index	H	2019/11/29
111	86	Partition List	c++	python	linklist	M	2019/11/30
112	161	One Edit Distance	c++	python	string	M	2019/12/01
113	89	Gray Code	c++	python	bit	M	2019/12/01
114	134	Gas Station	c++	python	array	M	2019/12/02
115	165	Compare Version Numbers	c++	python	array	M	2019/12/03
116	176	Second Highest Salary	c++	sql	sql	E	2019/12/04
117	179	Largest Number	c++	python	sort	M	2019/12/05
118	126	Word Ladder II	c++	python	bfs	H	2019/12/06
119	127	Word Ladder	c++	python	bfs	M	2019/12/07
120	258	Add Digits	c++	python	math	E	2019/12/08
121	2	Add Two Numbers	c++	python	linklist	M	2019/12/08
122	231	Power of Two	c++	python	math	E	2019/12/09
123	445	Add Two Numbers II	c++	python	linklist+stack	M	2019/12/10
124	11	Container With Most Water	c++	python	two pointers	M	2019/12/10
125	755	Pour Water	c++	python	array	M	2019/12/11
126	116	Populating Next Right Pointers in Each Node	c++	python	bfs/递归	M	2019/12/12
127	117	Populating Next Right Pointers in Each Node II	c++	python	bfs	M	2019/12/12
128	199	Binary Tree Right Side View	c++	python	bfs/dfs	M	2019/12/12
129	238	Product of Array Except Self	c++	python	array/math	M	2019/12/13
130	261	Graph Valid Tree	c++	python	dfs/bfs/union find	M	2019/12/14
131	323	Number of Connected Components in an Undirected Graph	c++	python	dfs/bfs/union find	M	2019/12/15
132	112	Path Sum	c++	python	dfs	E	2019/12/16
133	113	Path Sum II	c++	python	dfs	M	2019/12/17
134	437	Path Sum III	c++	python	dfs	M	2019/12/18
135	257	Binary Tree Paths	c++	python	dfs	E	2019/12/18
136	988	Smallest String Starting From Leaf	c++	python	dfs	M	2019/12/19
137	20	Valid Parentheses	c++	python	stack	E	2019/12/20
138	32	Longest Valid Parentheses	c++	python	stack	H	2019/12/21
139	22	Generate Parentheses	c++	python	dfs+backtrack	M	2019/12/22
140	241	Different Ways to Add Parentheses	c++	python	dfs+divide and conquer	M	2019/12/23
141	124	Binary Tree Maximum Path Sum	c++	python	dfs	H	2019/12/24
142	217	ContainsDuplicate	c++	python	set	E	2019/12/25
143	219	Contains Duplicate II	c++	python	hashmap	E	2019/12/26
144	220	Contains Duplicate III	c++	python	hashmap	M	2019/12/27
145	203	Remove LinkedList Elements	c++	python	linklist	E	2019/12/28
146	205	Isomorphic String	c++	python	hashmap	E	2019/12/29
147	290	Word Pattern	c++	python	hashmap	E	2019/12/30
148	292	Nim Game	c++	python	math	E	2019/12/31
149	299	Bulls and Cows	c++	python	math	E	2020/01/01
150	144	Binary Tree Preorder Traversal	c++	python	dfs/stack	M	2020/01/02
151	145	Binary Tree Postorder Traversal	c++	python	dfs/stack	M	2020/01/03
152	94	Binary Tree Inorder Traversal	c++	python	dfs/stack	H	2020/01/04
153	590	N-ary Tree Postorder Traversal	c++	python	dfs/stack	E	2020/01/05
154	173	Binary Search Tree Iterator	c++	python	tree/stack	M	2020/01/06
155	235	Lowest Common Ancestor of a Binary Search Tree	c++	python	tree	E	2020/01/07
156	237	Delete Node in a LinkedList	c++	python	linkedlist	E	2020/01/08
157	468	Validate IP Address	c++	python	string	M	2020/01/09
158	230	Kth Smallest Element in a BST	c++	python	tree/binary search	M	2020/01/10
159	270	Closest Binary Search Tree Value	c++	python	tree/binary search	E	2020/01/11
160	1317	Convert Integer to the Sum of Two No-Zero Integers	c++	python	math	E	2020/01/12
161	1318	Minimum Flips to Make a OR b Equal to c	c++	python	math/bit	E	2020/01/12
162	1319	Number of Operations to Make Network Connected	c++	python	dfs/union find	M	2020/01/13
163	236	Lowest Common Ancestor of a Binary Tree	c++	python	dfs	M	2020/01/14
164	250	Count Univalue Subtrees	c++	python	dfs	M	2020/01/15
165	304	Range Sum Query 2D - Immutable	c++	python	dp	M	2020/01/16
166	255	Verify Preorder Sequence in Binary Search Tree	c++	python	stack/tree	M	2020/01/19
167	658	Find K Closest Elements	c++	python	binary search	M	2020/01/20
168	1332	Remove Palindromic Subsequences	c++	python	string	E	2020/01/26
169	1333	Filter Restaurants by Vegan-Friendly, Price and Distance	c++	python	math	M	2020/01/27
170	1335	Minimum Difficulty of a Job Schedule	c++	python	dp	H	2020/02/04
171	272	Closest Binary Search Tree Value II	c++	python	tree/inorder	H	2020/02/05
172	285	Inorder Successor in BST	c++	python	tree	M	2020/02/06
173	298	Binary Tree Longest Consecutive Sequence	c++	python	tree/dfs	M	2020/02/07
174	366	Find Leave sof Binary Tree	c++	python	tree/dfs	M	2020/02/07
175	404	Sum of Left Leaves	c++	python	tree/dfs	E	2020/02/07