刷题打卡，每日十道LC

刷题记录  4.14  3题
57. Insert Interval
56. Merge Intervals
76. Minimum Window Substring

这两天被择校弄的精力憔悴

刷题记录  4.16  10题
43. Multiply Strings
30. Substring with Concatenation of All Words
118. Pascal's Triangle
119. Pascal's Triangle II
54. Spiral Matrix
59. Spiral Matrix II
6. ZigZag Conversion
29. Divide Two Integers
68. Text Justification
149. Max Points on a Line
终于忙完了，可以开始正常刷题了

4.17 打卡，复习了50题，包括（数组，链表，字符串，队列，栈，二叉树）

【刷题记录】 4/18  10题
10. Regular Expression Matching
44. Wildcard Matching
49. Group Anagrams
65. Valid Number
151. Reverse Words in a String
162. Find Peak Element
165. Compare Version Numbers
167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title
171. Excel Sheet Column Number

【刷题记录】 4/19  10题
200. Number of Islands
203. Remove Linked List Elements
204. Count Primes
207. Course Schedule
208. Implement Trie (Prefix Tree)
209. Minimum Size Subarray Sum
210. Course Schedule II
211. Add and Search Word - Data structure design
212. Word Search II

你这一天十题的速度也太快了！ 不到三个月就能把leetcode刷一遍了……

【刷题记录】 4/19  1题
218. The Skyline Problem
今天休息一下，事情有点多，这道218也做了很长久。

【刷题记录】 4/21  10题
221. Maximal Square
222. Count Complete Tree Nodes
224. Basic Calculator
227. Basic Calculator II
228. Summary Ranges
229. Majority Element II
233. Number of Digit One
237. Delete Node in a Linked List
239. Sliding Window Maximum
241. Different Ways to Add Parentheses

【刷题记录】 4/22  10题
821. Shortest Distance to a Character
822. Card Flipping Game
820. Short Encoding of Words
823. Binary Trees With Factors
257. Binary Tree Paths
258. Add Digits
273. Integer to English Words
278. First Bad Version
279. Perfect Squares
282. Expression Add Operators

【刷题记录】 4/23  7题
284. Peeking Iterator
287. Find the Duplicate Number
295. Find Median from Data Stream
297. Serialize and Deserialize Binary Tree
299. Bulls and Cows
301. Remove Invalid Parentheses
310. Minimum Height Trees