Contents

# Flatten Array

Take a nested list and return a single flattened list with all values except nil/null.

The challenge is to write a function that accepts an arbitrarily-deep nested list-like structure and returns a flattened structure without any nil/null values.

For Example

input: [1,[2,3,null,4],[null],5]

output: [1,2,3,4,5]

The Scala exercises assume an SBT project scheme. The exercise solution source
should be placed within the exercise directory/src/main/scala. The exercise
unit tests can be found within the exercise directory/src/test/scala.

To run the tests simply run the command `sbt test` in the exercise directory.

For more detailed info about the Scala track see the [help
page](http://exercism.io/languages/scala).


## Source

Interview Question [https://reference.wolfram.com/language/ref/Flatten.html](https://reference.wolfram.com/language/ref/Flatten.html)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

74 entries across 74 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.179	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.178	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.177	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.176	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.175	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.174	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.173	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.172	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.171	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.170	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.169	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.167	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.166	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.165	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.164	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.163	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.162	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.161	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.160	tracks/scala/exercises/flatten-array/README.md