Practice - Base Cases (Atomic Regular Expressions)
Practice Questions
Test your understanding with targeted questions
What does the regex ∅ represent?
💡 Hint: Think about what constitutes an empty language.
What is symbol ϵ used for in regex?
💡 Hint: Consider how it defines a match for zero characters.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the empty set (∅) represent?
💡 Hint: Think of what matches would result in nothing.
True or False: The symbol ϵ represents the empty string.
💡 Hint: Reflect on what an empty match refers to.
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Challenge Problems
Push your limits with advanced challenges
Create a regex pattern that matches the string 'Hello' or nothing.
💡 Hint: Consider how you could express 'or nothing' in regex.
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Reference links
Supplementary resources to enhance your learning experience.