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-2.2.1.98	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.97	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.96	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.95	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.94	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.93	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.92	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.91	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.90	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.89	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.88	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.87	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.86	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.85	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.84	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.83	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.82	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.81	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.80	tracks/kotlin/exercises/flatten-array/README.md
trackler-2.2.1.79	tracks/kotlin/exercises/flatten-array/README.md