Dataset

15 minute readings of NCEI's COOP HPD Data from 2014 - March 2019

Download, extract, and then concatonate all files together into a single CSV.

To ensure a consistent document, this pre-concatonated tarball will be used for testing.

Reference the dataset's README for an understanding of the csv headings.

Challenge

Find the station north of the 45th parallel which experienced the longest time with rain (not total rainfall, but total time raining). Treat each *Val as a full 15 minutes.

Answer

Stations are labeled ABC123456789. Return just the numbers of the station. If multiple stations experienced the same duration of rain for the time period the dataset covers, return the sum of all station IDs (stripped of letters).

For example:

If stations ABC12345 and stations DEF67890 share the longest duration of rain than the answer would be:

80235

How to time

Because tests will be performed on the same machine, and to accomdate for answers which stream the data instead of reading it into memory, begin timing immediately when your program starts and end timing immediately after getting the result (I recommend passing result back to main() so that the time to printf() doesn't count against you).

if __name__ == "__main__":
    start = time.now()
    result = do_work()
    total_time = time.now() - start
    print(result)

Output

In order to automate the updating of the leaderboard output should be formated accordingly:

Author, Language, Result, Time, Notes

Notes can include the method used to get the result (for example if you have multiple answers)

How to Contribute

Copy the example folder to a new folder (e.g. 'elixir/' for a elixir based test). In the new folder put your build command (if any) in build_test.sh and put your run command in run_test.sh. If you are familiar with Docker place any dependancies in the Dockerfile.

How to run tests

All tests can be run locally using run_tests.sh. If you have docker installed you can build all tests using build_docker_tests.sh, then run using run_docker_test.sh. Docker will manage the test dependancies for you.

Individual tests can be run from their folders using build_test.sh and run_test.sh or, for Docker, build_docker.sh and run_docker.sh

Leaderboard

Single Threaded

Name	Language	Answer	Time	Notes
plusuncold	C++	353402	8,336ms	optimized
pard68	rust	00353402	20,788ms
Ben Green	Python	353402	29,243ms	Optimized
plusuncold	C++	353402	40,528ms	simple
zombeej	Node v11.3.0	353402	52,898ms	Single-threaded & slow as molasses
specs	python	00353402	61,070ms	ugly. needs cleanup.
specs	cython	00353402	105,690ms	ugly. needs cleanup.

Concurrent

Name	Language	Answer	Time	Notes
zombeej	Node v11.3.0	353402	22,064ms	Multi-threaded