ARTS 打卡 week#1

Algorithm:

https://github.com/jennyzsh/LeetCode/blob/master/1_two_sum.py



Review: some basic instructions of elasticsearch

https://medium.com/better-programming/integrate-elasticsearch-with-node-js-37ed7b286f1c



Tips:

elasticsearch 除了搜索，也可以记录系统log。具体怎么操作，下周再仔细研究。