leetcode

#	problem	Solution
1	Two Sum	Solution 1
2	Add Two Numbers	Solution 2
3	Longest Substring Without Repeating Characters	Solution 3
4	Median of Two Sorted Arrays	Solution 4
5	Longest Palindromic Substring	Solution 5
6	ZigZag Conversion	Solution 6
7	Reverse Integer	Solution 7
8	String to Integer (atoi)	Solution 8
9	Palindrome Number	Solution 9
10	Regular Expression Matching	Solution 10
11	Container With Most Water	Solution 11
12	Integer to Roman	Solution 12
13	Roman to Integer	Solution 13
14	Longest Common Prefix	Solution 14
15	3Sum	Solution 15
16	3Sum Closest	Solution 16
17	Letter Combinations of a Phone Number	Solution 17
18	4Sum	Solution 18
19	Remove Nth Node From End of List	Solution 19
20	Valid Parentheses	Solution 20
21	Merge Two Sorted Lists	Solution 21
22	Generate Parentheses	Solution 22
23	Merge k Sorted Lists	Solution 23
24	Swap Nodes in Pairs	Solution 24
25	Reverse Nodes in k-Group	Solution 25
26	Remove Duplicates from Sorted Array	Solution 26
27	Remove Element	Solution 27
28	Implement strStr()	Solution 28
29	Divide Two Integers	Solution 29
30	Substring with Concatenation of All Words	Solution 30
31	Next Permutation	Solution 31
32	Longest Valid Parentheses	Solution 32
33	Search in Rotated Sorted Array	Solution 33
34	Search for a Range	Solution 34
35	Search Insert Position	Solution 35
36	Valid Sudoku	Solution 36
37	Sudoku Solver	Solution 37
38	Count and Say	Solution 38
39	Combination Sum	Solution 39
40	Combination Sum II	Solution 40
41	First Missing Positive	Solution 41
42	Trapping Rain Water	Solution 42
43	Multiply Strings	Solution 43
44	Wildcard Matching	Solution 44
45	Jump Game II	Solution 45
46	Permutations	Solution 46
47	Permutations II	Solution 47
48	Rotate Image	Solution 48
49	Group Anagrams	Solution 49
50	Pow(x, n)	Solution 50
51	N-Queens	Solution 51
52	N-Queens II	Solution 52
53	Maximum Subarray	Solution 53
54	Spiral Matrix	Solution 54
55	Jump Game	Solution 55
56	Merge Intervals	Solution 56
57	Insert Interval	Solution 57
58	Length of Last Word	Solution 58
59	Spiral Matrix II	Solution 59
60	Permutation Sequence	Solution 60
61	Rotate List	Solution 61
62	Unique Paths	Solution 62
63	Unique Paths II	Solution 63
64	Minimum Path Sum	Solution 64
65	Valid Number	Solution 65
66	Plus One	Solution 66
67	Add Binary	Solution 67
68	Text Justification	Solution 68
69	Sqrt(x)	Solution 69
70	Climbing Stairs	Solution 70
71	Simplify Path	Solution 71
72	Edit Distance	Solution 72
73	Set Matrix Zeroes	Solution 73
74	Search a 2D Matrix	Solution 74
75	Sort Colors	Solution 75
76	Minimum Window Substring	Solution 76
77	Combinations	Solution 77
78	Subsets	Solution 78
79	Word Search	Solution 79
80	Remove Duplicates from Sorted Array II	Solution 80
81	Search in Rotated Sorted Array II	Solution 81
82	Remove Duplicates from Sorted List II	Solution 82
83	Remove Duplicates from Sorted List	Solution 83
84	Largest Rectangle in Histogram	Solution 84
85	Maximal Rectangle	Solution 85
86	Partition List	Solution 86
87	Scramble String	Solution 87
88	Merge Sorted Array	Solution 88
89	Gray Code	Solution 89
90	Subsets II	Solution 90
91	Decode Ways	Solution 91
92	Reverse Linked List II	Solution 92
93	Restore IP Addresses	Solution 93
94	Binary Tree Inorder Traversal	Solution 94
95	Unique Binary Search Trees II	Solution 95
96	Unique Binary Search Trees	Solution 96
97	Interleaving String	Solution 97
98	Validate Binary Search Tree	Solution 98
99	Recover Binary Search Tree	Solution 99
100	Same Tree	Solution 100
101	Symmetric Tree	Solution 101
102	Binary Tree Level Order Traversal	Solution 102
103	Binary Tree Zigzag Level Order Traversal	Solution 103
104	Maximum Depth of Binary Tree	Solution 104
105	Construct Binary Tree from Preorder and Inorder Traversal	Solution 105
106	Construct Binary Tree from Inorder and Postorder Traversal	Solution 106
107	Binary Tree Level Order Traversal II	Solution 107
108	Convert Sorted Array to Binary Search Tree	Solution 108
109	Convert Sorted List to Binary Search Tree	Solution 109
110	Balanced Binary Tree	Solution 110
111	Minimum Depth of Binary Tree	Solution 111
112	Path Sum	Solution 112
113	Path Sum II	Solution 113
114	Flatten Binary Tree to Linked List	Solution 114
115	Distinct Subsequences	Solution 115
116	Populating Next Right Pointers in Each Node	Solution 116
117	Populating Next Right Pointers in Each Node II	Solution 117
118	Pascal's Triangle	Solution 118
119	Pascal's Triangle II	Solution 119
120	Triangle	Solution 120
121	Best Time to Buy and Sell Stock	Solution 121
122	Best Time to Buy and Sell Stock II	Solution 122
123	Best Time to Buy and Sell Stock III	Solution 123
124	Binary Tree Maximum Path Sum	Solution 124
125	Valid Palindrome	Solution 125
126	Word Ladder II	Solution 126
127	Word Ladder	Solution 127
128	Longest Consecutive Sequence	Solution 128
129	Sum Root to Leaf Numbers	Solution 129
130	Surrounded Regions	Solution 130
131	Palindrome Partitioning	Solution 131
132	Palindrome Partitioning II	Solution 132
133	Clone Graph	Solution 133
134	Gas Station	Solution 134
135	Candy	Solution 135
136	Single Number	Solution 136
137	Single Number II	Solution 137
138	Copy List with Random Pointer	Solution 138
139	Word Break	Solution 139
140	Word Break II	Solution 140
141	Linked List Cycle	Solution 141
142	Linked List Cycle II	Solution 142
143	Reorder List	Solution 143
144	Binary Tree Preorder Traversal	Solution 144
145	Binary Tree Postorder Traversal	Solution 145
146	LRU Cache	Solution 146
147	Insertion Sort List	Solution 147
148	Sort List	Solution 148
149	Max Points on a Line	Solution 149
150	Evaluate Reverse Polish Notation	Solution 150
151	Reverse Words in a String	Solution 151
152	Maximum Product Subarray	Solution 152
153	Find Minimum in Rotated Sorted Array	Solution 153
154	Find Minimum in Rotated Sorted Array II	Solution 154
155	Min Stack	Solution 155
156	Binary Tree Upside Down	Solution 156
157	Read N Characters Given Read4	Solution 157
158	Read N Characters Given Read4 II - Call multiple times	Solution 158
159	Longest Substring with At Most Two Distinct Characters	Solution 159
160	Intersection of Two Linked Lists	Solution 160
161	One Edit Distance	Solution 161
162	Find Peak Element	Solution 162
163	Missing Ranges	Solution 163
164	Maximum Gap	Solution 164
165	Compare Version Numbers	Solution 165
166	Fraction to Recurring Decimal	Solution 166
167	Two Sum II - Input array is sorted	Solution 167
168	Excel Sheet Column Title	Solution 168
169	Majority Element	Solution 169
170	Two Sum III - Data structure design	Solution 170
171	Excel Sheet Column Number	Solution 171
172	Factorial Trailing Zeroes	Solution 172
173	Binary Search Tree Iterator	Solution 173
174	Dungeon Game	Solution 174
179	Largest Number	Solution 179
186	Reverse Words in a String II	Solution 186
187	Repeated DNA Sequences	Solution 187
188	Best Time to Buy and Sell Stock IV	Solution 188
189	Rotate Array	Solution 189
190	Reverse Bits	Solution 190
191	Number of 1 Bits	Solution 191
198	House Robber	Solution 198
199	Binary Tree Right Side View	Solution 199
200	Number of Islands	Solution 200
201	Bitwise AND of Numbers Range	Solution 201
202	Happy Number	Solution 202
203	Remove Linked List Elements	Solution 203
204	Count Primes	Solution 204
205	Isomorphic Strings	Solution 205
206	Reverse Linked List	Solution 206
207	Course Schedule	Solution 207
208	Implement Trie (Prefix Tree)	Solution 208
209	Minimum Size Subarray Sum	Solution 209
210	Course Schedule II	Solution 210
211	Add and Search Word - Data structure design	Solution 211
212	Word Search II	Solution 212
213	House Robber II	Solution 213
214	Shortest Palindrome	Solution 214
215	Kth Largest Element in an Array	Solution 215
216	Combination Sum III	Solution 216
217	Contains Duplicate	Solution 217
218	The Skyline Problem	Solution 218
219	Contains Duplicate II	Solution 219
220	Contains Duplicate III	Solution 220
221	Maximal Square	Solution 221
222	Count Complete Tree Nodes	Solution 222
223	Rectangle Area	Solution 223
224	Basic Calculator	Solution 224
225	Implement Stack using Queues	Solution 225
226	Invert Binary Tree	Solution 226
227	Basic Calculator II	Solution 227
228	Summary Ranges	Solution 228
229	Majority Element II	Solution 229
230	Kth Smallest Element in a BST	Solution 230
231	Power of Two	Solution 231
232	Implement Queue using Stacks	Solution 232
233	Number of Digit One	Solution 233
234	Palindrome Linked List	Solution 234
235	Lowest Common Ancestor of a Binary Search Tree	Solution 235
236	Lowest Common Ancestor of a Binary Tree	Solution 236
237	Delete Node in a Linked List	Solution 237
238	Product of Array Except Self	Solution 238
239	Sliding Window Maximum	Solution 239
240	Search a 2D Matrix II	Solution 240
241	Different Ways to Add Parentheses	Solution 241
242	Valid Anagram	Solution 242
243	Shortest Word Distance	Solution 243
244	Shortest Word Distance II	Solution 244
245	Shortest Word Distance III	Solution 245
246	Strobogrammatic Number	Solution 246
247	Strobogrammatic Number II	Solution 247
248	Strobogrammatic Number III	Solution 248
249	Group Shifted Strings	Solution 249
250	Count Univalue Subtrees	Solution 250
251	Flatten 2D Vector	Solution 251
252	Meeting Rooms	Solution 252
253	Meeting Rooms II	Solution 253
254	Factor Combinations	Solution 254
255	Verify Preorder Sequence in Binary Search Tree	Solution 255
256	Paint House	Solution 256
257	Binary Tree Paths	Solution 257
258	Add Digits	Solution 258
259	3Sum Smaller	Solution 259
260	Single Number III	Solution 260
261	Graph Valid Tree	Solution 261
263	Ugly Number	Solution 263
264	Ugly Number II	Solution 264
265	Paint House II	Solution 265
266	Palindrome Permutation	Solution 266
267	Palindrome Permutation II	Solution 267
268	Missing Number	Solution 268
269	Alien Dictionary	Solution 269
270	Closest Binary Search Tree Value	Solution 270
271	Encode and Decode Strings	Solution 271
272	Closest Binary Search Tree Value II	Solution 272
273	Integer to English Words	Solution 273
274	H-Index	Solution 274
275	H-Index II	Solution 275
276	Paint Fence	Solution 276
277	Find the Celebrity	Solution 277
278	First Bad Version	Solution 278
279	Perfect Squares	Solution 279
280	Wiggle Sort	Solution 280
281	Zigzag Iterator	Solution 281
282	Expression Add Operators	Solution 282
283	Move Zeroes	Solution 283
284	Peeking Iterator	Solution 284
285	Inorder Successor in BST	Solution 285
286	Walls and Gates	Solution 286
287	Find the Duplicate Number	Solution 287
288	Unique Word Abbreviation	Solution 288
289	Game of Life	Solution 289
290	Word Pattern	Solution 290
291	Word Pattern II	Solution 291
292	Nim Game	Solution 292
293	Flip Game	Solution 293
294	Flip Game II	Solution 294
295	Find Median from Data Stream	Solution 295
296	Best Meeting Point	Solution 296
297	Serialize and Deserialize Binary Tree	Solution 297
298	Binary Tree Longest Consecutive Sequence	Solution 298
299	Bulls and Cows	Solution 299
300	Longest Increasing Subsequence	Solution 300
301	Remove Invalid Parentheses	Solution 301
302	Smallest Rectangle Enclosing Black Pixels	Solution 302
303	Range Sum Query - Immutable	Solution 303
304	Range Sum Query 2D - Immutable	Solution 304
305	Number of Islands II	Solution 305
306	Additive Number	Solution 306
307	Range Sum Query - Mutable	Solution 307
308	Range Sum Query 2D - Mutable	Solution 308
309	Best Time to Buy and Sell Stock with Cooldown	Solution 309
310	Minimum Height Trees	Solution 310
311	Sparse Matrix Multiplication	Solution 311
312	Burst Balloons	Solution 312
313	Super Ugly Number	Solution 313
314	Binary Tree Vertical Order Traversal	Solution 314
315	Count of Smaller Numbers After Self	Solution 315
316	Remove Duplicate Letters	Solution 316
317	Shortest Distance from All Buildings	Solution 317
318	Maximum Product of Word Lengths	Solution 318
319	Bulb Switcher	Solution 319
320	Generalized Abbreviation	Solution 320
321	Create Maximum Number	Solution 321
322	Coin Change	Solution 322
323	Number of Connected Components in an Undirected Graph	Solution 323
324	Wiggle Sort II	Solution 324
325	Maximum Size Subarray Sum Equals k	Solution 325
326	Power of Three	Solution 326
327	Count of Range Sum	Solution 327
328	Odd Even Linked List	Solution 328
329	Longest Increasing Path in a Matrix	Solution 329
330	Patching Array	Solution 330
331	Verify Preorder Serialization of a Binary Tree	Solution 331
332	Reconstruct Itinerary	Solution 332
333	Largest BST Subtree	Solution 333
334	Increasing Triplet Subsequence	Solution 334
335	Self Crossing	Solution 335
336	Palindrome Pairs	Solution 336
337	House Robber III	Solution 337
338	Counting Bits	Solution 338
339	Nested List Weight Sum	Solution 339
340	Longest Substring with At Most K Distinct Characters	Solution 340
341	Flatten Nested List Iterator	Solution 341
342	Power of Four	Solution 342
343	Integer Break	Solution 343
344	Reverse String	Solution 344
345	Reverse Vowels of a String	Solution 345
346	Moving Average from Data Stream	Solution 346
347	Top K Frequent Elements	Solution 347
348	Design Tic-Tac-Toe	Solution 348
349	Intersection of Two Arrays	Solution 349
350	Intersection of Two Arrays II	Solution 350
351	Android Unlock Patterns	Solution 351
352	Data Stream as Disjoint Intervals	Solution 352
353	Design Snake Game	Solution 353
354	Russian Doll Envelopes	Solution 354
355	Design Twitter	Solution 355
356	Line Reflection	Solution 356
357	Count Numbers with Unique Digits	Solution 357
358	Rearrange String k Distance Apart	Solution 358
359	Logger Rate Limiter	Solution 359
360	Sort Transformed Array	Solution 360
361	Bomb Enemy	Solution 361
362	Design Hit Counter	Solution 362
363	Max Sum of Rectangle No Larger Than K	Solution 363
364	Nested List Weight Sum II	Solution 364
365	Water and Jug Problem	Solution 365
366	Find Leaves of Binary Tree	Solution 366
367	Valid Perfect Square	Solution 367
368	Largest Divisible Subset	Solution 368
369	Plus One Linked List	Solution 369
370	Range Addition	Solution 370
371	Sum of Two Integers	Solution 371
372	Super Pow	Solution 372
373	Find K Pairs with Smallest Sums	Solution 373
374	Guess Number Higher or Lower	Solution 374
375	Guess Number Higher or Lower II	Solution 375
376	Wiggle Subsequence	Solution 376
377	Combination Sum IV	Solution 377
378	Kth Smallest Element in a Sorted Matrix	Solution 378
379	Design Phone Directory	Solution 379
380	Insert Delete GetRandom O(1)	Solution 380
381	Insert Delete GetRandom O(1) - Duplicates allowed	Solution 381
382	Linked List Random Node	Solution 382
383	Ransom Note	Solution 383
384	Shuffle an Array	Solution 384
385	Mini Parser	Solution 385
386	Lexicographical Numbers	Solution 386
387	First Unique Character in a String	Solution 387
388	Longest Absolute File Path	Solution 388
389	Find the Difference	Solution 389
390	Elimination Game	Solution 390
391	Perfect Rectangle	Solution 391
392	Is Subsequence	Solution 392
393	UTF-8 Validation	Solution 393
394	Decode String	Solution 394
395	Longest Substring with At Least K Repeating Characters	Solution 395
396	Rotate Function	Solution 396
397	Integer Replacement	Solution 397
398	Random Pick Index	Solution 398
399	Evaluate Division	Solution 399
400	Nth Digit	Solution 400

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