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-2.2.1.78	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.77	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.76	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.75	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.74	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.73	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.72	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.71	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.70	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.69	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.68	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.67	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.66	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.65	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.64	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.63	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.62	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.61	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.60	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.59	tracks/kotlin/exercises/flatten-array/README.md