Pull in Viget posts

content/elsewhere/romanize-another-programming-puzzle/index.md

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+---
+title: "Romanize: Another Programming Puzzle"
+date: 2015-03-06T00:00:00+00:00
+draft: false
+needs_review: true
+canonical_url: https://www.viget.com/articles/romanize-another-programming-puzzle/
+---
+
+We had such a good time working through our [first programming
+challenge](https://viget.com/extend/otp-a-language-agnostic-programming-challenge)
+that we decided to put another one together. We had several ideas, but
+[Pat](https://viget.com/about/team/preagan)'s idea of converting to and
+from Roman numerals won out, and a few hours later,
+[Romanize](https://github.com/vigetlabs/romanize) was born.
+
+The name of the game is to write, in a language of your choice, a pair
+of programs that work like this:
+
+    > ./deromanize I
+    1
+    > ./deromanize II
+    2
+    > ./deromanize MCMIV
+    1904
+
+    > ./romanize 1
+    I
+    > ./romanize 2
+    II
+    > ./romanize 1904
+    MCMIV
+
+It\'s a deceptively difficult problem, especially if, like me, you only
+understand how Roman numerals work in the vaguest sense. And it's one
+thing to create a solution that passes the test suite, and another
+entirely to write something concise and elegant -- going from Arabic to
+Roman, especially, seems to defy refactoring.
+
+We've created working solutions in ~~seven~~ ~~eight~~ ~~nine~~ ten
+languages:
+
+-   C (via [Steve132](https://github.com/Steve132))
+-   Clojure
+-   Elixir
+-   Go
+-   Haskell (plus check out [this cool
+    thing](https://gist.github.com/sgronblo/e3d73a61c5dd968b7d29) from
+    [sgronblo](https://github.com/sgronblo) using QuickCheck and Parsec)
+-   OCaml
+-   Node.js (via [Xylem](https://github.com/Xylem))
+-   PHP
+-   Ruby
+-   Swift (shout out to [wasnotrice](https://github.com/wasnotrice))
+
+What's gonna be number eleven? **You decide!** [Fork the
+repo](https://github.com/vigetlabs/romanize) and give it your best shot.
+When you're done, send us a PR.