Regex | HackerRank Solutions

Answers to every Regex puzzle.

Matching Specific String: 0:30
Matching Anything But a Newline: 0:40
Matching Digits & Non-Digit Characters: 0:50
Matching Whitespace & Non-Whitespace Character: 1:00
Matching Word & Non-Word Character: 1:10
Matching Start & End: 1:20
Matching Specific Characters: 1:30
Excluding Specific Characters: 1:40
Matching Character Ranges: 1:50
Matching {x} Repetitions: 2:00
Matching {x, y} Repetitions: 2:10
Matching Zero Or More Repetitions: 2:20
Matching One Or More Repetitions: 2:30
Matching Ending Items: 2:40
Matching Word Boundaries: 2:50
Capturing & Non-Capturing Groups: 3:00
Alternative Matching: 3:10
Matching Same Text Again & Again: 3:20
Backreferences To Failed Groups: 3:30
Branch Reset Groups: 3:40
Forward References: 3:50
Positive Lookahead: 4:00
Negative Lookahead: 4:10
Positive Lookbehind: 4:20
Negative Lookbehind: 4:30
Detect HTML links: 4:40
Detect HTML Tags: 4:50
Find A Sub-Word: 5:00
Alien Username: 5:10
IP Address Validation: 5:20
Find a Word: 5:30
Detect the Email Addresses: 5:40
Detect the Domain Name: 5:50
Building a Smart IDE: Identifying comments: 6:00
Detecting Valid Latitude and Longitude Pairs: 6:10
HackerRank Tweets: 6:20
Build a Stack Exchange Scraper: 6:30
Utopian Identification Number: 6:40
Valid PAN format: 6:50
Find HackerRank: 7:00
Saying Hi: 7:10
HackerRank Language: 7:20
Building a Smart IDE: Programming Language Detection: 7:30
Split the Phone Numbers: 7:40
Detect HTML Attributes: 7:50
The British and American Style of Spelling: 8:00
UK and US: Part 2: 8:10