每天刷5道题打卡贴！

----09/20/2019----

252. Meeting Rooms        Sort
253. Meeting Rooms II        Sort, Heap
621. Task Scheduler        Array
221. Maximal Square        DP
91. Decode Ways        DP
22. Generate Parentheses        DFS
17. Letter Combinations of a Phone Number        DFS

樓主加油！大家一起努力刷題！

Spiral Matrix好经典的一道题

----09/24/2019---

560. Subarray Sum Equals K        Array, Hash Table
953. Verifying an Alien Dictionary        Hash Table
1086. High Five        Array, Hash Table
209. Minimum Size Subarray Sum        Two Pointers
64. Minimum Path Sum        DP

惭愧了
----10/07/2019---

79. Word Search        DFS
139. Word Break        DP/recursion
120. Triangle        DP
140. Word Break II        DP
290. Word Pattern        Hash Table
322. Coin Change        DP
811. Subdomain Visit Count        Hash Table

----10/18/2019----

981. Time Based Key-Value Store        Hash Table, Binary Search
62. Unique Paths        DP
599. Minimum Index Sum of Two Lists        Hash Table
160. Intersection of Two Linked Lists        Linked List
146. LRU Cache        Design
14. Longest Common Prefix        String

----10/09/2019----

143. Reorder List        Linked List
102. Binary Tree Level Order Traversal        Tree, BFS
845. Longest Mountain in Array        Two Pointers
128. Longest Consecutive Sequence        Array
695. Max Area of Island        DFS

----10/10/2019----

713. Subarray Product Less Than K        Two Pointers
78. Subsets        DFS
443. String Compression        String
716. Max Stack        String
312. Burst Balloons        DP

----10/11/2019----

1046. Last Stone Weight        Heap
153. Find Minimum in Rotated Sorted Array        Binary Search
118. Pascal's Triangle        Array
189. Rotate Array        Array
61. Rotate List        Linked List

----10/12/2019----

207. Course Schedule        BFS
24. Swap Nodes in Pairs        Linked List, Recursion
92. Reverse Linked List II        Linked List
692. Top K Frequent Words        Hash Table
1007. Minimum Domino Rotations For Equal Row        Greedy