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Bounding Box

Design

  1. Collect a set of non-grouped input values and their indices where the character is a '*'
  2. Run a breath first search for neighboring values against the first value in the set of non-grouped input values from (1)
  3. Once the first BFS exits returning a group of neighbors, repeat the BFS on each head value in the remaining set of non-grouped input values until the set is empty
  4. Find the (top, left) and (bottom, right) box boundaries from each group of neighbors
  5. Check each resulting bounding box against permutations of the result set to find and eliminate overlapping boxes

Build

In order to build the project Scala and SBT must be installed: https://www.scala-lang.org/download/2.12.10.html https://www.scala-sbt.org/download.html

Once installed run: sbt assembly to build the executable jar.

Included in the package is an executable .jar that only requires a java interpreter if unable/unwilling to install Scala and SBT.

The jar should be located in /target/scala-2.13/boundingbox.jar

Run

At the project root run:

$ java -jar $PWD/target/scala-2.13/boundingbox.jar

To read in a corpus of text, and output the resulting bounding boxes to your shell run:

$ cat <pathToFile> | java -jar $PWD/target/scala-2.13/boundingbox.jar

e.g., cat $PWD/src/test/resources/boundingbox/test3.txt | java -jar $PWD/target/scala-2.13/boundingbox.jar

Run the unit tests:

$ sbt clean coverage test

To generate the coverage reports (after running the tests) run:

$ sbt coverageReport

The html report should be located here: /bounding-box/target/scala-2.13/scoverage-report/index.html