[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 17
还参加了contest，这次真是一言难尽，第二三题都没写出来= =，看答案都费劲
Valid Triangle Number
Minimum Absolute Difference
Text Justification

# Day 3
481. Magical String
309. Best Time to Buy and Sell Stock with Cooldown

09/21
680. Valid Palindrome II
lc contest

Day_20 (9/20)

Reverse Substrings Between Each Pair of Parentheses
Maximum number of balloon

# Day_21
Array
Pascal's Triangle
Pascal's Triangle II

# Day 4
* Minimum Height Trees
* Reverse Words in a String III
* Reverse Words in a String
* Reverse Integer
* 886. Possible Bipartition

09/20
42. Trapping Rain Water
407. Trapping Rain Water II

# Day 3:

* Pancake Sorting
* K Inverse Pairs Array

#Day_12

LeetCode Contest 题
1196. How Many Apples Can You Put into the Basket
1197. Minimum Knight Movies
1198. Find Smallest Common Element in All Rows

Day 4
162. Find Peak Element
238. Product of Array Except Self
347. Top K Frequent Elements
136. Single Number