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]



## 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

133 entries across 133 versions & 1 rubygems

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