Execution covers all table sizes (limited only by javascript engine limitations. To improve this, could be used any library (like big.js) that makes calculations by using String instead of Number).
Input data is read by using stream from the .csv file (input.csv if you leave the argument empty and don't answer the question) and written to stdout.
- Install packages: run
npm installin terminal. - Create build from ts files: run
npm run build:webpackin terminal.
Run node cli.js input.csv. in terminal.
There are several examples of different table sizes. And different input file data (including big one).
npm run test
Details
Given a CSV file representing a series of tables, implement a rotation engine
that parses, verifies and rotates each table, and finally outputs a CSV file with
all valid and rotated tables.
You should be able to run your program like:
~ $ node cli.js input.csv > output.csv
The input file is the first and only argument to the program. Output should be
written to stdout (aka printed to the screen).
Input
The input will be a CSV file with the columns id and json. You can assume id
to be a string and json to be a string (JSON encoded data).
id,json
1,"[1, 2, 3, 4, 5, 6, 7, 8, 9]"
2,"[40, 20, 90, 10]"
3,"[-5]"
9,"[2, -0]"
5,"[2, -5, -5]"
8,"[1, 1, 1, 1, 1]”
Output
The output should be a CSV-encoded series of rotated tables with the
columns id, json and is_valid. The latter is an indicator of whether or not
a given table is valid, if it is not, json should be an empty array.
id,json,is_valid
1,"[4, 1, 2, 7, 5, 3, 8, 9, 6]",true
2,"[90, 40, 10, 20]",true
3,"[-5]",true
9,"[]",false
5,"[]",false
8,”[]",false