Hello coders

HackerRank presents a 24 hour regular expression contest Regular Expresso starting at 7 January 2016 at 17:30PM UTC

Allowed languages : Java, PHP, Perl, Ruby, Python with prewritten templates.

NOTE You can only submit the regular expression.

You can practice here https://www.hackerrank.com/domains/regex

T-Shirts for top 10
Tie breaking rule: Same score are sorted by total time taken since beginning of contest.
Scoring: Binary

GL&HF