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-2.2.1.139	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.138	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.137	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.136	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.135	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.134	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.133	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.132	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.131	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.130	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.129	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.128	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.127	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.126	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.125	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.124	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.123	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.122	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.121	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.120	tracks/kotlin/exercises/flatten-array/README.md