(Golf) Formatting NumberTo Money

It has been a while since there has been a good round of golf, so I decided to post one. I couldn't come up with a nice interesting math brain-teaser, so I'll post this one.

The Rules

Write a sub that takes a number as an argument and returns it in the standard monetary format -- with comma's and to two decimal places

Expected Input-Output

Input: 3
Output: 3.00
Input: 1000
Output: 1,000.00
Input: 12345678
Output: 12,345,678.00
Input: 4444444.11
Output: 4,444,444.11
Input: 98765.343
Output: 98,765.34
Input: 111.229
Output: 111.23

My Swing (83 chars)

sub a
{
$_=pop;($_=reverse sprintf"%.2f",$_)=~s/(\d\d\d(?=\d))/$1,/g,return re
+verse split''
}
[download]

Enoch

(update: Changed "integer" to "number". Integers don't have decimals. Thanks to xylus for pointing out my err.

Back to Meditations