Technical Assignment for Hex Trust

Name: Liu Wei
Email: u3555658@connect.hku.hku

This repository is for Task2 and Task3.

For Task 2

For the orderbook question, I use the depth difference data from binance, for constructing the orderbook, i use the priorityQueue,in this case, it can remove the best bid/ask in O(1)time.
- please run the code:
```
python ./Task2/orderbook.py
```
For the problem: "Find the AWS instance that has the lowest latency with the server where the exchange’s matching engine resides",
- I use the Dijkstra Algorithm, all the servers in AWS would in the graph structure.
- the weight in each edge would be the response time for the adjancent node.
- To get the reponse time, we should use the ping method to get the time
- please run the code :
```
python ./Task2/dijkstra.py
```