List of regex challenges

[gwenf]

Here is a list of the topics that need to be covered in our regex challenges.

1. Match text
2. Match lowercase [a-z]
3. Match uppercase
4. Match mixed case
5. Match spaces in text
6. Anchors: starts with ^, ends with $
7. Or: a[bc] or a(b|c)
8. Quantifiers: * + ? {}
9. Special characters: \d \w \s \D $\d
10. a(?:bc)*
11. greedy and lazy matching: <[^<>]+>
12. boundaries: \babc\b
13. back references: ([abc])\1
14. Look ahead, look behind
15. negation operator

[gwenf]

Here are some items that I think should be included in the challenges:

• phone numbers
• percentages
• urls
• valid email
• trim spacing
• names
• password requirements
• IP address
• currency

[Cristiano-Rocha]

what about?
match all digits that are immediately preceding by odd digit
match all html links
IPv4 and IPv6 address
md5 hash
html atributes