Practice - Regular Expressions
Practice Questions
Test your understanding with targeted questions
What does the regular expression 'a*' match?
💡 Hint: Think about how many 'a's can be present including none.
What does the union operation in regular expressions indicate?
💡 Hint: Remember the word 'or'!
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does '(cat|dog)' match?
💡 Hint: Consider what it means to have an alternate expression.
True or False: The expression 'a*' must always match at least one character.
💡 Hint: Think about the meaning of '*' in regex.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Create a regex that matches any string containing at least one digit.
💡 Hint: Consider how to represent a digit.
Develop a regex to match a date format 'YYYY-MM-DD'.
💡 Hint: Think about how you would describe each part of the date.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.