tsurowiec/scala-pair-matcher

Toy Scala application for finding pairs of integers whose sum equals to given number.

Błażej Rybarkiewicz

Toy Scala application for finding pairs of integers whose sum equals to given number.

What it does:

Given list of integers it can match pairs whose sum equals to given number.

1,0,5,10,6,11,5 => (find pairs whose sum is 11) => (1,11),(5,6),(0,11)

Usage

scala-pair-matcher <input.csv> <output.csv> [--pair=NUM] [--min=NUM] [--max=NUM]
   Arguments:
     input.csv     input file in csv format
     output.csv    output file in csv format
   Options:
     --pair=NUM    make pairs whose sum is NUM          (default 0)
     --min=NUM     validate if input numbers are >= NUM (default Int.MinValue)
     --max=NUM     validate if input numbers are <= NUM (default Int.MaxValue)
     --help        print help/usage```

Running on host

sbt assembly
java -jar target/scala-2.13/scala-pair-matcher-assembly-0.1.jar data/input.csv data/output.csv --pair=12 --min=0 --max=12

Running with docker

Building:

docker build -t abryb/scala-pair-matcher .

Running:

In order to read from and write to file we have to mount directory. Given data is in data directory:

docker run --rm -it -v $PWD/data:/data abryb/scala-pair-matcher input.csv output.csv --pair=12 --min=0 --max=12

Supported input format

Only supported input format is csv file of integers, for example: input.csv

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