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List of Leetcode's problems and solutions:

#	Title	Acceptance	Difficulty	Status
256	Paint House	38.8%	Medium
255	Verify Preorder Sequence in Binary Search Tree	27.5%	Medium
254	Factor Combinations	29.5%	Medium
253	Meeting Rooms II	26.4%	Medium
252	Meeting Rooms	34.0%	Easy
251	Flatten 2D Vector	25.6%	Medium
250	Count Univalue Subtrees	33.6%	Medium
249	Group Shifted Strings	23.0%	Easy
248	Strobogrammatic Number III	21.1%	Hard
247	Strobogrammatic Number II	22.4%	Medium
246	Strobogrammatic Number	31.1%	Easy
245	Shortest Word Distance III	41.2%	Medium
244	Shortest Word Distance II	33.2%	Medium
243	Shortest Word Distance	39.1%	Easy
242	Valid Anagram	34.0%	Easy
241	Different Ways to Add Parentheses	26.0%	Medium
240	Search a 2D Matrix II	28.1%	Medium
239	Sliding Window Maximum	22.2%	Hard
238	Product of Array Except Self	34.6%	Medium
237	Delete Node in a Linked List	44.7%	Easy
236	Lowest Common Ancestor of a Binary Tree	26.6%	Medium
235	Lowest Common Ancestor of a Binary Search Tree	37.4%	Easy
234	Palindrome Linked List	21.7%	Easy
233	Number of Digit One	19.9%	Medium
232	Implement Queue using Stacks	33.8%	Easy
231	Power of Two	29.8%	Easy
230	Kth Smallest Element in a BST	29.7%	Medium
229	Majority Element II	22.1%	Medium
228	Summary Ranges	18.6%	Easy
227	Basic Calculator II	18.6%	Medium
226	Invert Binary Tree	37.1%	Easy
225	Implement Stack using Queues	30.4%	Easy
224	Basic Calculator	16.6%	Medium
223	Rectangle Area	25.7%	Easy
222	Count Complete Tree Nodes	20.5%	Medium
221	Maximal Square	19.7%	Medium
220	Contains Duplicate III	15.5%	Medium
219	Contains Duplicate II	25.6%	Easy
218	The Skyline Problem	16.5%	Hard
217	Contains Duplicate	36.0%	Easy
216	Combination Sum III	28.7%	Medium
215	Kth Largest Element in an Array	27.3%	Medium
214	Shortest Palindrome	16.1%	Hard
213	House Robber II	26.6%	Medium
212	Word Search II	14.8%	Hard
211	Add and Search Word - Data structure design	20.3%	Medium
210	Course Schedule II	19.5%	Medium
209	Minimum Size Subarray Sum	23.2%	Medium
208	Implement Trie (Prefix Tree)	24.8%	Medium
207	Course Schedule	22.1%	Medium
206	Reverse Linked List	32.3%	Easy
205	Isomorphic Strings	24.6%	Easy
204	Count Primes	19.8%	Easy
203	Remove Linked List Elements	25.5%	Easy
202	Happy Number	31.8%	Easy
201	Bitwise AND of Numbers Range	25.1%	Medium
200	Number of Islands	22.6%	Medium
199	Binary Tree Right Side View	27.8%	Medium
198	House Robber	29.3%	Easy
191	Number of 1 Bits	37.9%	Easy
190	Reverse Bits	28.7%	Easy
189	Rotate Array	18.1%	Easy
188	Best Time to Buy and Sell Stock IV	18.4%	Hard
187	Repeated DNA Sequences	20.3%	Medium
186	Reverse Words in a String II	31.6%	Medium
179	Largest Number	16.1%	Medium
174	Dungeon Game	18.1%	Hard
173	Binary Search Tree Iterator	29.6%	Medium
172	Factorial Trailing Zeroes	29.1%	Easy
171	Excel Sheet Column Number	36.6%	Easy
170	Two Sum III - Data structure design	25.0%	Easy
169	Majority Element	35.5%	Easy
168	Excel Sheet Column Title	18.3%	Easy
167	Two Sum II - Input array is sorted	43.3%	Medium
166	Fraction to Recurring Decimal	13.0%	Medium
165	Compare Version Numbers	15.3%	Easy
164	Maximum Gap	24.5%	Hard
163	Missing Ranges	24.3%	Medium
162	Find Peak Element	31.9%	Medium
161	One Edit Distance	24.5%	Medium
160	Intersection of Two Linked Lists	28.9%	Easy
159	Longest Substring with At Most Two Distinct Characters	30.6%	Hard
158	Read N Characters Given Read4 II - Call multiple times	22.6%	Hard
157	Read N Characters Given Read4	29.8%	Easy
156	Binary Tree Upside Down	34.2%	Medium
155	Min Stack	19.3%	Easy
154	Find Minimum in Rotated Sorted Array II	32.2%	Hard
153	Find Minimum in Rotated Sorted Array	33.5%	Medium
152	Maximum Product Subarray	19.6%	Medium
151	Reverse Words in a String	15.2%	Medium
150	Evaluate Reverse Polish Notation	21.4%	Medium
149	Max Points on a Line	12.8%	Hard
148	Sort List	22.3%	Medium
147	Insertion Sort List	26.7%	Medium
146	LRU Cache	15.1%	Hard
145	Binary Tree Postorder Traversal	32.6%	Hard
144	Binary Tree Preorder Traversal	36.3%	Medium
143	Reorder List	21.0%	Medium
142	Linked List Cycle II	31.4%	Medium
141	Linked List Cycle	36.4%	Medium
140	Word Break II	17.8%	Hard
139	Word Break	23.1%	Medium
138	Copy List with Random Pointer	25.4%	Hard
137	Single Number II	35.1%	Medium
136	Single Number	45.1%	Medium
135	Candy	20.7%	Hard
134	Gas Station	25.8%	Medium
133	Clone Graph	24.2%	Medium
132	Palindrome Partitioning II	19.9%	Hard
131	Palindrome Partitioning	27.0%	Medium
130	Surrounded Regions	14.8%	Medium
129	Sum Root to Leaf Numbers	30.3%	Medium
128	Longest Consecutive Sequence	29.6%	Hard
127	Word Ladder	19.4%	Medium
126	Word Ladder II	13.2%	Hard
125	Valid Palindrome	22.0%	Easy
124	Binary Tree Maximum Path Sum	21.6%	Hard
123	Best Time to Buy and Sell Stock III	24.0%	Hard
122	Best Time to Buy and Sell Stock II	38.5%	Medium
121	Best Time to Buy and Sell Stock	32.8%	Medium
120	Triangle	27.4%	Medium
119	Pascal's Triangle II	29.4%	Easy
118	Pascal's Triangle	30.1%	Easy
117	Populating Next Right Pointers in Each Node II	32.1%	Hard
116	Populating Next Right Pointers in Each Node	36.3%	Medium
115	Distinct Subsequences	26.6%	Hard
114	Flatten Binary Tree to Linked List	28.8%	Medium
113	Path Sum II	26.6%	Medium
112	Path Sum	29.6%	Easy
111	Minimum Depth of Binary Tree	28.9%	Easy
110	Balanced Binary Tree	31.9%	Easy
109	Convert Sorted List to Binary Search Tree	28.0%	Medium
108	Convert Sorted Array to Binary Search Tree	34.0%	Medium
107	Binary Tree Level Order Traversal II	31.0%	Easy
106	Construct Binary Tree from Inorder and Postorder Traversal	26.9%	Medium
105	Construct Binary Tree from Preorder and Inorder Traversal	26.4%	Medium
104	Maximum Depth of Binary Tree	45.1%	Easy
103	Binary Tree Zigzag Level Order Traversal	26.4%	Medium
102	Binary Tree Level Order Traversal	29.2%	Easy
101	Symmetric Tree	31.6%	Easy
100	Same Tree	41.4%	Easy
99	Recover Binary Search Tree	24.4%	Hard
98	Validate Binary Search Tree	20.3%	Medium
97	Interleaving String	20.8%	Hard
96	Unique Binary Search Trees	35.6%	Medium
95	Unique Binary Search Trees II	28.1%	Medium
94	Binary Tree Inorder Traversal	36.3%	Medium
93	Restore IP Addresses	21.1%	Medium
92	Reverse Linked List II	25.9%	Medium
91	Decode Ways	16.3%	Medium
90	Subsets II	27.8%	Medium
89	Gray Code	32.9%	Medium
88	Merge Sorted Array	29.1%	Easy
87	Scramble String	24.5%	Hard
86	Partition List	27.4%	Medium
85	Maximal Rectangle	22.1%	Hard
84	Largest Rectangle in Histogram	22.6%	Hard
83	Remove Duplicates from Sorted List	34.4%	Easy
82	Remove Duplicates from Sorted List II	25.0%	Medium
81	Search in Rotated Sorted Array II	31.2%	Medium
80	Remove Duplicates from Sorted Array II	30.4%	Medium
79	Word Search	20.5%	Medium
78	Subsets	28.2%	Medium
77	Combinations	31.0%	Medium
76	Minimum Window Substring	19.0%	Hard
75	Sort Colors	32.6%	Medium
74	Search a 2D Matrix	31.6%	Medium
73	Set Matrix Zeroes	31.5%	Medium
72	Edit Distance	26.4%	Hard
71	Simplify Path	20.1%	Medium
70	Climbing Stairs	34.4%	Easy
69	Sqrt(x)	23.2%	Medium
68	Text Justification	14.7%	Hard
67	Add Binary	24.6%	Easy
66	Plus One	30.3%	Easy
65	Valid Number	11.5%	Hard
64	Minimum Path Sum	32.3%	Medium
63	Unique Paths II	27.9%	Medium
62	Unique Paths	33.0%	Medium
61	Rotate List	21.6%	Medium
60	Permutation Sequence	22.8%	Medium
59	Spiral Matrix II	31.8%	Medium
58	Length of Last Word	27.6%	Easy
57	Insert Interval	21.6%	Hard
56	Merge Intervals	22.5%	Hard
55	Jump Game	26.9%	Medium
54	Spiral Matrix	20.8%	Medium
53	Maximum Subarray	34.4%	Medium
52	N-Queens II	36.1%	Hard
51	N-Queens	26.4%	Hard
50	Pow(x, n)	26.7%	Medium
49	Group Anagrams	24.3%	Medium
48	Rotate Image	32.0%	Medium
47	Permutations II	25.8%	Hard
46	Permutations	31.9%	Medium
45	Jump Game II	24.1%	Hard
44	Wildcard Matching	15.3%	Hard
43	Multiply Strings	21.1%	Medium
42	Trapping Rain Water	30.1%	Hard
41	First Missing Positive	22.8%	Hard
40	Combination Sum II	25.2%	Medium
39	Combination Sum	28.0%	Medium
38	Count and Say	25.3%	Easy
37	Sudoku Solver	22.1%	Hard
36	Valid Sudoku	27.2%	Easy
35	Search Insert Position	35.4%	Medium
34	Search for a Range	27.4%	Medium
33	Search in Rotated Sorted Array	28.7%	Hard
32	Longest Valid Parentheses	20.9%	Hard
31	Next Permutation	24.9%	Medium
30	Substring with Concatenation of All Words	19.6%	Hard
29	Divide Two Integers	14.9%	Medium
28	Implement strStr()	22.4%	Easy
27	Remove Element	31.8%	Easy
26	Remove Duplicates from Sorted Array	31.0%	Easy
25	Reverse Nodes in k-Group	25.3%	Hard
24	Swap Nodes in Pairs	32.3%	Medium
23	Merge k Sorted Lists	21.0%	Hard
22	Generate Parentheses	32.6%	Medium
21	Merge Two Sorted Lists	32.5%	Easy
20	Valid Parentheses	26.5%	Easy
19	Remove Nth Node From End of List	26.9%	Easy
18	4Sum	21.7%	Medium
17	Letter Combinations of a Phone Number	25.6%	Medium
16	3Sum Closest	26.8%	Medium
15	3Sum	16.9%	Medium
14	Longest Common Prefix	25.5%	Easy
13	Roman to Integer	34.3%	Easy
12	Integer to Roman	34.0%	Medium
11	Container With Most Water	31.8%	Medium
10	Regular Expression Matching	20.7%	Hard
9	Palindrome Number	28.4%	Easy
8	String to Integer (atoi)	12.8%	Easy
7	Reverse Integer	24.0%	Easy
6	ZigZag Conversion	21.5%	Easy
5	Longest Palindromic Substring	20.7%	Medium
4	Median of Two Sorted Arrays	17.1%	Hard
3	Longest Substring Without Repeating Characters	20.3%	Medium
2	Add Two Numbers	20.4%	Medium
1	Two Sum	17.7%	Medium