201-300

('$' means the problem is locked on Leetcode, '*' means the problem is related to Database, '#' means the problem is related to Shell.)

#	Title	Solution	Difficulty
300	Longest Increasing Subsequence	31.50%	Medium
299	Bulls and Cows	23.80%	Easy
298	Binary Tree Longest Consecutive Sequence $	32.20%	Medium
297	Serialize and Deserialize Binary Tree	23.80%	Medium
296	Best Meeting Point $	41.40%	Hard
295	Find Median from Data Stream	18.60%	Hard
294	Flip Game II $	38.10%	Medium
293	Flip Game $	47.60%	Easy
292	Nim Game	49.50%	Easy
291	Word Pattern II $	31.50%	Hard
290	Word Pattern	26.50%	Easy
289	Game of Life	32.60%	Medium
288	Unique Word Abbreviation $	16.80%	Easy
287	Find the Duplicate Number	32.80%	Hard
286	Walls and Gates $	29.90%	Medium
285	Inorder Successor in BST $	32.50%	Medium
284	Peeking Iterator	31.00%	Medium
283	Move Zeroes	41.40%	Easy
282	Expression Add Operators	18.90%	Hard
281	Zigzag Iterator $	37.20%	Medium
280	Wiggle Sort $	43.30%	Medium
279	Perfect Squares	28.80%	Medium
278	First Bad Version	19.80%	Easy
277	Find the Celebrity $	31.70%	Medium
276	Paint Fence $	25.00%	Easy
275	H-Index II	31.40%	Medium
274	H-Index	25.30%	Medium
273	Integer to English Words	15.50%	Medium
272	Closest Binary Search Tree Value II $	26.90%	Hard
271	Encode and Decode Strings $	25.40%	Medium
270	Closest Binary Search Tree Value $	29.40%	Easy
269	Alien Dictionary $	16.50%	Hard
268	Missing Number	34.70%	Medium
267	Palindrome Permutation II $	22.50%	Medium
266	Palindrome Permutation $	45.80%	Easy
265	Paint House II $	30.00%	Hard
264	Ugly Number II	21.60%	Medium
263	Ugly Number	32.60%	Easy
262	Trips and Users *	16.10%	Hard
261	Graph Valid Tree $	25.40%	Medium
260	Single Number III	37.60%	Medium
259	3Sum Smaller $	34.20%	Medium
258	Add Digits	46.50%	Easy
257	Binary Tree Paths	21.90%	Easy
256	Paint House $	38.40%	Medium
255	Verify Preorder Sequence in Binary Search Tree $	32.30%	Medium
254	Factor Combinations $	29.00%	Medium
253	Meeting Rooms II $	28.80%	Medium
252	Meeting Rooms $	35.40%	Easy
251	Flatten 2D Vector $	28.30%	Medium
250	Count Univalue Subtrees $	32.70%	Medium
249	Group Shifted Strings $	25.20%	Easy
248	Strobogrammatic Number III $	21.80%	Hard
247	Strobogrammatic Number II $	26.70%	Medium
246	Strobogrammatic Number $	31.60%	Easy
245	Shortest Word Distance III $	43.20%	Medium
244	Shortest Word Distance II $	33.70%	Medium
243	Shortest Word Distance $	41.80%	Easy
242	Valid Anagram	39.30%	Easy
241	Different Ways to Add Parentheses	27.10%	Medium
240	Search a 2D Matrix II	31.40%	Medium
239	Sliding Window Maximum	24.30%	Hard
238	Product of Array Except Self	42.40%	Medium
237	Delete Node in a Linked List	50.90%	Easy
236	Lowest Common Ancestor of a Binary Tree	28.30%	Medium
235	Lowest Common Ancestor of a Binary Search Tree	38.90%	Medium
234	Palindrome Linked List	23.80%	Easy
233	Number of Digit One	16.10%	Medium
232	Implement Queue using Stacks	37.40%	Easy
231	Power of Two	31.30%	Easy
230	Kth Smallest Element in a BST	30.50%	Medium
229	Majority Element II	30.50%	Medium
228	Summary Ranges	21.10%	Easy
227	Basic Calculator II	18.00%	Medium
226	Invert Binary Tree	35.40%	Easy
225	Implement Stack using Queues	29.60%	Medium
224	Basic Calculator	15.80%	Medium
223	Rectangle Area	25.60%	Easy
222	Count Complete Tree Nodes	19.40%	Medium
221	Maximal Square	20.30%	Medium
220	Contains Duplicate III	15.30%	Medium
219	Contains Duplicate II	25.60%	Easy
218	The Skyline Problem	16.20%	Hard
217	Contains Duplicate	35.90%	Easy
216	Combination Sum III	27.70%	Medium
215	Kth Largest Element in an Array	27.30%	Medium
214	Shortest Palindrome	16.80%	Hard
213	House Robber II	26.30%	Medium
212	Word Search II	15.00%	Hard
211	Add and Search Word - Data structure design	20.70%	Medium
210	Course Schedule II	19.30%	Medium
209	Minimum Size Subarray Sum	22.90%	Medium
208	Implement Trie (Prefix Tree)	24.80%	Medium
207	Course Schedule	21.70%	Medium
206	Reverse Linked List	31.50%	Easy
205	Isomorphic Strings	24.20%	Easy
204	Count Primes	19.00%	Easy
203	Remove Linked List Elements	25.80%	Easy
202	Happy Number	31.40%	Easy
201	Bitwise AND of Numbers Range	23.30%	Medium