Leetcode solutions in C++, Java, Python

#	Title	Solution	Difficulty
300	Longest Increasing Subsequence	C++	Medium
299	Bulls and Cows	C++	Easy
298	Binary Tree Longest Consecutive Sequence	C++	Medium
297	Serialize and Deserialize Binary Tree	C++	Medium
296	Best Meeting Point	C++	Hard
295	Find Median from Data Stream	C++	Hard
294	Flip Game II	C++	Medium
293	Flip Game	C++	Easy
292	Nim Game	C++	Easy
291	Word Pattern II	C++	Hard
290	Word Pattern	C++	Easy
289	Game of Life	C++	Medium
288	Unique Word Abbreviation	C++	Easy
287	Find the Duplicate Number	C++	Hard
286	Walls and Gates	C++	Medium
285	Inorder Successor in BST	C++	Medium
284	Peeking Iterator	C++	Medium
283	Moving Zeroes	C++	Easy
282	Expression Add Operators	C++	Hard
281	Zigzag Iterator	C++	Medium
280	Wiggle Sort	C++	Medium
279	Perfect Squares	C++	Medium
278	First Bad Version	C++	Easy
277	Find the Celebrity	C++	Medium
276	Paint Fence	C++	Easy
275	H Index II	C++	Medium
274	H Index	C++	Medium
273	Integer to English Words	C++	Medium
272	Closest Binary Search Tree Value II	C++	Hard
271	Encode and Decode Strings	C++	Medium
270	Closest Binary Search Tree Value	C++	Easy
269	Alien Dictionary	C++	Hard
268	Missing Number	C++	Medium
267	Palindrome Permutation II	C++	Medium
266	Palindrome Permutation	C++	Easy
265	Paint House II	C++	Hard
264	Ugly Number II	C++	Medium
263	Ugly Number	C++	Easy
261	Graph Valid Tree	C++	Medium
260	Single Number III	C++	Medium
259	3Sum Smaller	C++	Medium
258	Add Digits	C++	Easy
257	Binary Tree Paths	C++	Easy
256	Paint House	C++	Medium
255	Verify Preorder Sequence in Binary Search Tree	C++	Medium
254	Factor Combinations	C++	Medium
253	Meeting Rooms II	C++	Medium
252	Meeting Rooms	C++	Easy
251	Flatten 2D Vector	C++	Medium
250	Count Univalue Subtrees	C++	Medium
249	Group Shifted Strings	C++	Easy
248	Strobogrammatic Number III	C++	Hard
247	Strobogrammatic Number II	C++	Medium
246	Strobogrammatic Number	C++	Easy
245	Shortest Word Distance III	C++	Medium
244	Shortest Word Distance II	C++	Medium
243	Shortest Word Distance	C++	Easy
242	Valid Anagram	C++	Easy
241	Different Ways to Add Parentheses	C++	Medium
240	Search a 2D Matrix II	C++	Medium
239	Sliding Window Maximum	C++	Hard
238	Product of Array Except Self	C++	Medium
237	Delete Node in a Linked List	C++	Easy
236	Lowest Common Ancestor of a Binary Tree	C++	Medium
235	Lowest Common Ancestor of a Binary Search Tree	C++	Easy
234	Palindrome Linked List	C++	Easy
233	Number of Digit One	C++	Medium
232	Implement Queue using Stacks	Java	Easy
231	Power of Two	Java	Easy
230	Kth Smallest Element in a BST	Java	Medium
229	Majority Element II	Java	Medium
228	Summary Ranges	Java	Easy
227	Basic Calculator II	Java	Medium
226	Invert Binary Tree	Java	Easy
225	Implement Stack using Queues	Java	Medium
224	Basic Calculator	Java	Medium
223	Rectangle Area	Java	Easy
222	Count Complete Tree Nodes	Java	Medium
221	Maximal Square	Java	Medium
220	Contains duplicate iii	Java	Medium
219	Contains duplicate ii	Java	Easy
218	The Skyline Problem	Java	Hard
217	Contains duplicate	Java	Easy
216	Combination Sum III	Java	Medium
215	Kth Largest Element in an Array	Java	Medium
214	Shortest Palindrome	Java	Hard
213	House robber II	Java	Medium
212	Word search II	Java	Hard
211	Add and Search Word	Java	Medium
210	Course schedule II	Java	Medium
209	Minimum Size Subarray Sum	Java	Medium
208	Implement Trie	Java	Medium
207	Course schedule	Java	Medium
205	Revese linkedlist	Java	Easy
205	Isomorphic Strings	Java	Easy
204	Count primes	Java	Medium
203	Remove Linked List Elements	Java	Easy
202	Happy Number	Java	Easy
201	Bitwise AND of Numbers Range	Java	Medium
200	Number of islands	Java	Medium
199	Binary tree right side view	Java	Medium
198	House robber	Java	Easy
191	Number of 1 bits	Java	Easy
190	Reverse bits	Java	Easy
189	Rotate array	Java	Easy
188	Best Time to Buy and Sell Stock IV	Java	Hard
187	Repeated DNA Sequences	Java	Medium
176	Reverse Words in a String II	Java, Python	Medium
179	Largest Number	Java	Medium
174	Dungeon Game	Java	Hard
173	Binary Search Tree Iterator	Java	Medium
172	Factorial Trailing Zeroes	Java	Easy
171	Excel Sheet Column Number	Java	Easy
169	Majority Element	Java, Python	Easy
168	Excel Sheet Column Title	Java, Python	Easy
166	Fraction to Recurring Decimal	Java	Medium
165	Compare Version Numbers	Java	Easy
164	Maximum Gap	Java	Hard
163	Missing Ranges	Java, Python	Medium
162	Find Peak Element	Java, Python	Medium
161	One Edit Distance	Java	Medium
160	Intersection of Two Linked Lists	Java	Easy
159	Longest Substring with At Most Two Distinct Characters	Java	Hard
158	Read N Characters Given Read4 II - Call multiple times	Java	Hard
157	Read N Characters Given Read4	Java	Easy
156	Binary Tree Upside Down	Java	Medium
155	Min Stack	Java	Easy
154	Find Minimum in Rotated Sorted Array II	Java	Hard
153	Find Minimum in Rotated Sorted Array	Java	Medium
152	Maximum Product Subarray	Java	Medium
151	Reverse Words in a String	Java, Python	Medium
150	Evaluate Reverse Polish Notation	Java, Python	Medium
149	Max Points on a Line	Java	Hard
148	Sort List	Java	Medium
147	Insertion Sort List	Java	Medium
146	LRU Cache	Java	Hard
145	Binary Tree Postorder Traversal	Java, Python	Hard
144	Binary Tree Preorder Traversal	Java, Python	Medium
143	Reorder List	Java	Medium
142	Linked List Cycle II	Java	Medium
141	Linked List Cycle	Java	Medium
140	Word Break II	Java	Hard
139	Word Break	Java	Medium
138	Copy List with Random Pointer	Java	Hard
137	Single Number II	Java, Python	Medium
136	Single Number	Java, Python	Medium
135	Candy	Java, Python	Hard
134	Gas Station	Java, Python	Medium
133	Clone Graph	Java	Medium
132	Palindrome Partitioning II	Java	Hard
131	Palindrome Partitioning	Java	Medium
130	Surrounded Regions	Java, Python	Medium
129	Sum Root to Leaf Numbers	Java	Medium
128	Longest Consecutive Sequence	Java	Hard
127	Word Ladder II	Java	Hard
126	Word Ladder	Java	Medium
125	Valid Palindrome	Java, Python	Easy
124	Binary Tree Maximum Path Sum	Java	Hard
123	Best Time to Buy and Sell Stock III	Java, Python	Hard
122	Best Time to Buy and Sell Stock II	Java, Python	Medium
121	Best Time to Buy and Sell Stock	Java, Python	Medium
120	Triangle	Java, Python	Medium
119	Pascal's Triangle II	Java, Python	Easy
118	Pascal's Triangle	Java, Python	Easy
117	Populating Next Right Pointers in Each Node II	Java	Hard
116	Populating Next Right Pointers in Each Node	Java	Medium
115	Distinct Subsequences	Java	Hard
114	Flatten Binary Tree to Linked List	Java	Medium
113	Path Sum II	Java, Python	Medium
112	Path Sum	Java, Python	Easy
111	Minimum Depth of Binary Tree	Java	Easy
110	Balanced Binary Tree	Java	Easy
109	Convert Sorted List to Binary Search Tree	Java, Python	Medium
108	Convert Sorted Array to Binary Search Tree	Java	Medium
107	Binary Tree Level Order Traversal II	Java	Easy
106	Construct Binary Tree from Inorder and Postorder	Java	Medium
105	Construct Binary Tree from Preorder and Inorder	Java	Medium
104	Maximum Depth of Binary Tree	Java, Python	Easy
103	Binary Tree Zigzag Level Order Traversal	Java	Medium
102	Binary Tree Level Order Traversal	Java	Easy
101	Symmetric Tree	Java	Easy
100	Same Tree	Java, Python	Easy
99	Recover Binary Search Tree	Java	Hard
98	Validate Binary Search Tree	Java	Medium
97	Interleaving String	Java	Hard
96	Unique Binary Search Trees II	Java, Python	Medium
95	Unique Binary Search Trees	Java, Python	Medium
94	Binary Tree Inorder Traversal	Java	Medium
93	Restore IP Addresses	Java	Medium
92	Reverse linked List II	Java	Medium
91	Subsets II	Java, Python	Medium
90	Decode Ways	Java	Medium
89	Gray Code	Java, Python	Medium
88	Merge Sorted Array	Java	Easy
87	Scramble String	Java, Python	Hard
86	Partition List	Java, Python	Medium
85	Maximal Rectangle	Java	Hard
84	Largest Rectangle in Histogram	Java	Hard
83	Remove Duplicates from Sorted List II	Java	Medium
82	Remove Duplicates from Sorted List	Java	Easy
81	Search in Rotated Sorted Array II	Java	Medium
80	Remove Duplicates from Sorted Array II	Java, Python	Medium
79	Word Search	Java	Medium
78	Subsets	Java, Python	Medium
77	Combinations	Java, Python	Medium
76	Minimum Window Substring	Java, Python	Hard
75	Sort Colors	Java	Medium
74	Search a 2D Matrix	Java	Medium
73	Set Matrix Zeroes	C++, Java	Medium
72	Edit Distance	Java	Hard
71	Simplify Path	Java, Python	Medium
70	Climbing Stairs	Java	Easy
69	Sqrt(x)	Java, Python	Medium
68	Text Justification	Java	Hard
67	Plus One	Java	Easy
66	Valid Number	Java, Python, C++	Easy
65	Add Binary	Java, Python	Easy
64	Merge Two Sorted Lists	Java	Easy
63	Minimum Path Sum	Java	Medium
62	Unique Paths II	Java	Medium
61	Unique Paths	Java	Medium
60	Rotate List	Java	Medium
59	Permutation Sequence	Java, Python	Medium
58	Spiral Matrix II	Java, Python	Medium
57	Length of Last Word	Java	Easy
56	Insert Interval	Java, Python	Hard
55	Merge Intervals	Java, Python	Hard
54	Jump Game	Java, Python	Medium
53	Spiral Matrix	Java, Python	Medium
52	Maximum Subarray	Java,Python	Medium
51	N-Queens II	Java	Hard
50	N-Queens	Java	Hard
49	"Pow(x, n)"	Java	Medium
48	Anagrams	Java, Python	Medium
47	Rotate Image	Java,Python	Medium
46	Permutations II	Java, Python	Hard
45	Permutations	Java, Python	Medium
44	Jump Game II	Java, Python	Hard
43	Wildcard Matching	Java	Hard
41	Trapping Rain Water	Java, Python	Hard
40	First Missing Positive	Java	Hard
39	Combination Sum II	Java, Python	Medium
38	Combination Sum	Java, Python	Medium
37	Count and Say	Java	Easy
36	Sudoku Solver	Java	Hard
35	Valid Sudoku	Java	Easy
34	Search Insert Position	Java	Medium
33	Search for a Range	Java	Medium
31	Longest Valid Parentheses	Java	Hard
32	Search in Rotated Sorted Array	Java	Hard
30	Next Permutation	Java, Python	Medium
29	Substring with Concatenation of All Words	Java	Hard
28	Divide Two Integers	Java	Medium
27	Implement strStr()	Java	Easy
26	Remove Element	Java, Python	Easy
25	Remove Duplicates from Sorted Array	Java, Python	Easy
24	Reverse Nodes in k-Group	Java	Hard
23	Swap Nodes in Pairs	Java, Python	Medium
22	Merge k Sorted Lists	Java	Hard
21	Generate Parentheses	Java	Medium
20	Valid Parentheses	Java, Python	Easy
19	Remove Nth Node From End of List	Java	Easy
18	Letter Combinations of a Phone Number	Java, Python	Medium
17	4Sum	Java	Medium
16	3Sum Closest	Java, Python	Medium
15	3Sum	Java	Medium
14	Longest Common Prefix	Java, Python	Easy
13	Roman to Integer	Java	Easy
12	Integer to Roman	Java, Python	Medium
11	Container With Most Water	Java, Python	Medium
10	Regular Expression Matching	Java	Hard
9	Palindrome Number	Java, Python	Easy
8	String to Integer (atoi)	Java	Easy
7	Reverse Integer	Java	Easy
6	ZigZag Conversion	Java, Python	Easy
5	Longest Palindromic Substring	Java	Medium
4	Add Two Numbers	Java	Medium
3	Longest Substring Without Repeating Characters	Java	Medium
2	Median of Two Sorted Arrays	Java	Hard
1	Two Sum	C++, Java, Python	Medium