This is a test task for an interview executed using the Scala language. The task was as following:

Problem: You are provided with the *.csv.gz file containing some data about plane flights.

Data has the following schema "YEAR","QUARTER","MONTH","DAY_OF_MONTH","DAY_OF_WEEK","FL_DATE","ORIGIN","DEST"

You'll need to extract several statistics out of the data file: List of all airports with total number of planes for the whole period that arrived to each airport Non-Zero difference in total number of planes that arrived to and left from the airport Do the point 1 but sum number of planes separately per each week Write some tests for the implemented functions Each point 1-3 should produce a separate output file.

• Scala
• SBT
• Scala-csv (as a csv reader)
• Specs2 (as a testing framework)

This is the SBT-based project so there's nothing special:

1. Clone the project
2. Execute 'sbt test run' in a command line, this will launch the tests and the Main if succeeded
3. Check the results in target/output