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]

Do not use scala built-in `flatten` function.

## Submitting Exercises

Note that, when trying to submit an exercise, make sure the solution is in the `exercism/scala/<exerciseName>` directory.

For example, if you're submitting `FlattenArray.scala` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/src/main/scala/FlattenArray.scala`.

For more detailed information about running tests, code style and linting,
please 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

39 entries across 39 versions & 1 rubygems

Version	Path
trackler-2.2.1.84	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.83	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.82	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.81	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.80	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.79	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.78	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.77	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.76	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.75	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.74	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.73	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.72	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.71	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.70	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.69	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.68	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.67	tracks/scala/exercises/flatten-array/README.md
trackler-2.2.1.66	tracks/scala/exercises/flatten-array/README.md