Notes on Accessing/Grading Every Question

1. git clone this repository

Problem 1

1. All the 3 functions for sum_to_n() are in the file named problem1.js

Problem 4

1. cd "Problem 4" into the directory.
2. npm install to install the node_modules
3. Ensure that ts-node is also installed globally so that ts-node is recognized as a command-line function.
4. ts-node retrieve-holders.ts to output the specific holder balances at the 3 addresses.

Problem 5

** The util contract is in contracts/BalanceChecker file, test file is test.js

** I have compiled and deployed BalanceChecker utility Contract to BSC testnet (https://bsc-testnet.public.blastapi.io) successfully

** The wallet address in test.js is also a wallet on the Bsc Testnet

** However, I cannot find existing token contracts in the same wallet on Bsc Testnet, hence the test is currently not working.

Problem 7

1. cd "Problem 7" into the directory.
2. psql -U postgres on terminal to launch postgresql and input password
3. If you wish to load simple schema and sample data for testing, run \i setupTests.sql
4. problem7query.sql contains the sql code for a single query statement only, without any creation of schema and loading of sample.
5. run \i problem7query.sql after step 3 if you wish to test the query with simple sample data. One row of result 0xabab is expected.