Sha256: d94a5aa5330ab55093449e5ac1b61a6c048fa805de081d51074928db587fc870

Contents?: true

Size: 1.57 KB

Versions: 74

Compression:

Stored size: 1.57 KB

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]

* * * *

To run the code in this exercise, you will only need to have [CommandBox CLI installed](https://ortus.gitbooks.io/commandbox-documentation/content/setup/installation.html).  This binary runs CFML code from the command line.

To run the tests, `cd` into the exercise folder and run the following:

```bash 
box task run TestRunner
# Or start up a test watcher that will rerun when files change
box task run TestRunner --:watcher
```

The tests leverage a library called TestBox which supports xUnit and BDD style of testing.  All test suites will be written in the [BDD style](https://testbox.ortusbooks.com/content/primers/bdd/specs.html) which uses closures to define test specs.  You won't need to worry about installing TestBox.  The CLI test runner will take care of that for you.  You just need to be connected to the internet the first time you run it.  You can read more about it here:

[https://testbox.ortusbooks.com/content/](https://testbox.ortusbooks.com/content/)
## 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

74 entries across 74 versions & 1 rubygems

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