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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]


## Setup

Go through the project setup instructions for Xcode using Swift:

http://exercism.io/languages/swift


## 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

106 entries across 106 versions & 1 rubygems

Version Path
trackler-2.2.1.43 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.42 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.41 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.40 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.39 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.38 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.37 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.36 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.35 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.34 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.33 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.32 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.31 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.30 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.29 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.28 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.27 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.26 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.25 tracks/swift/exercises/flatten-array/README.md
trackler-2.2.1.24 tracks/swift/exercises/flatten-array/README.md