Regular Expression Class Activity - Hsanokklis/2023-2024-Tech-journal GitHub Wiki

https://www.computerhope.com/jargon/r/regex.htm

Go through the tutorial and at least 5 of the challenges.

https://regexcrossword.com/

Notes:

• A+
  • Must be one or more A
• A|B
  • A or B
• A?
  • One or Zero (A is optional)
• B*
  • zero or infinite B [0, ] - B is optional
• [AB]
  • Range - one of the given letters
• [^AB]
  • not these letters
• (A)\1
  • One or more A
• A{2,}
  • Two or more A - there is no number after the 2, which means the range is infinite
• \D

Match any non digit. --

Special Characters

• /w
  • represents a word
• /d
  • represents a digit
• /s
  • represents a whitespace