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Contents

# Largest Series Product

Given a string of digits, calculate the largest product for a contiguous
substring of digits of length n.

For example, for the input `'1027839564'`, the largest product for a
series of 3 digits is 270 (9 * 5 * 6), and the largest product for a
series of 5 digits is 7560 (7 * 8 * 3 * 9 * 5).

Note that these series are only required to occupy *adjacent positions*
in the input; the digits need not be *numerically consecutive*.

For the input `'73167176531330624919225119674426574742355349194934'`,
the largest product for a series of 6 digits is 23520.

* * * *

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

A variation on Problem 8 at Project Euler [http://projecteuler.net/problem=8](http://projecteuler.net/problem=8)

## 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-2.2.1.180 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.179 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.178 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.177 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.176 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.175 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.174 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.173 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.172 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.171 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.170 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.169 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.167 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.166 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.165 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.164 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.163 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.162 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.161 tracks/cfml/exercises/largest-series-product/README.md
trackler-2.2.1.160 tracks/cfml/exercises/largest-series-product/README.md