Practice - How DFAs Recognize Languages (Operational Semantics)
Practice Questions
Test your understanding with targeted questions
What does a DFA consist of?
💡 Hint: Think about all parts that define a DFA.
What is the purpose of the transition function in a DFA?
💡 Hint: Consider how input symbols affect state transitions.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What ensures that a DFA is deterministic?
💡 Hint: Focus on what 'deterministic' implies.
A DFA can recognize an empty string by reaching which state?
💡 Hint: Think about what happens when no input is given.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design a DFA that recognizes the language of strings containing an even number of 'a's. Explain how you’d determine the states and transitions.
💡 Hint: Think about how many 'a's you would have processed as you move through states.
Using the Pumping Lemma, show that the language L = {a^n b^n | n ≥ 0} is not regular.
💡 Hint: Identify how the structure of the string changes with varying sizes of y.
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Reference links
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