[第五期活动] 在职刷题打卡，目标工作日一天2题，周末一天5题

[Day 24][Total Day 36] 2019/11/25，Topic：DS（Lintcode）
- 369. Convert Expression to Polish Notation
- 370. Convert Expression to Reverse Polish Notation
- 367. Expression Tree Build
- 368. Expression Evaluation
- 821. Time Intersection
- 920. Meeting Rooms
- 868. Maximum Average Subarray

# Day 19

Two Sum Less Than K

[19/11/24][Day 9] 1题

Topic: Heap
313. The Skyline Problem

这题真的很麻烦，解法很多，都掌握很不容易

[19/11/24][Day 9] 1题

Topic: Heap
313. The Skyline Problem

这题真的很麻烦，解法很多，都掌握很不容易

[Day 23][Total Day 35] 2019/11/24，Topic：Backpack / DS（Lintcode）
- 125. Backpack II
- 92. Backpack
- 563. Backpack V
- 559. Trie Service
- 477. Surrounded Regions

# Day 18

Prison Cells After N Days
Most Common Word

[19/11/23][Day 8] 1题

Topic: Heap
407. Trapping Rain Water II

卡在了skyline problem这一题，明天继续！

day 16
几种方法都写了一遍，bf, memo, dp
97. Interleaving String
44. Wildcard Matching

[Day 22][Total Day 34] 2019/11/23，Topic：DP（Lintcode）
- 430. Scramble String
- 398. Longest Continuous Increasing Subsequence II

# Day 17

Course Schedule
Binary Tree Zigzag Level Order Traversal