[第三期活动] 在职刷题打卡，目标工作日一天2题，周末一天5题

#Day_10

Binary Search:
Count of Smaller Numbers After Self
Russian Doll Envelopes

补充内容 (2019-9-18 07:50):
# Day_11

#Day_08

Review:
分类：String/Backtracki‍‍‍‍‍‍‌‌‍‍‍‍‌‍‌‍‌‌‌ng

17. Letter of combinations of a phone number
22. Generate Parentheses
3. Longest Substring Without Repeating

Day 3
Best time to buy and sell stock i & ii, dp

Day 4
LRU & LFU Cache, hash map & linked list

Day 5, tree again

101, 545, 270, 250, 333 tree basic

#day 8
733. Flood Fill
979. Distribute Coins in Binary Tree used JS and have a global var variable, it doens't work with multiple testcases in submitting.

Stage I : ac即可，不要求最优解，目的：见多识广
day5-09/11
1. 129. Sum Root to Leaf Numbers
2. 112. Path Sum
3. 117. Populating Next Right Pointers in Each Node II
4. 199. Binary Tree Right Side View
5. 437. Path Sum III
6. 8. String to Integer (atoi)
7. 190. Reverse Bits
8. 7. Reverse Integer
9. 28. Implement strStr()
10. 214. Shortest Palindrome
11. 5. Longest Palindromic Substring
12. 217. Contains Duplicate
13. 219. Contains Duplicate II
14. 9. Palindrome Number

Day_10 (9/10)

Remove substrings
Accounts merge

day 9
Paint House II
Flip Game
还想把Flip Game II写了来着，怎么写都不对，发现想错了，记录一个长度的potential win or steps是不够的，因为对方还是有可能赢。所以这题应该用递归确保对方没可能赢，自己才会赢。明天写

Day 2 （9/10）
133， 559

Day 06
09/10
5题
Add Binary
Pascal's Triangle
Implement strStr()
Longest Common Prefix
Reverse String

#Day_09

BS:
Find Minimum in Rotated Sorted Array
Find Minimum in Rotated Sorted Array II

补充内容 (2019-9-18 07:50):
# Day_10