Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does a Pushdown Automaton use for memory?
💡 Hint: Think about the structure of a PDA.
Question 2
Easy
Name one acceptance condition for PDAs.
💡 Hint: Recall how PDAs can accept strings.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What distinguishes a PDAs from DFAs?
- Use of non-determinism
- Use of a stack
- Finite memory
💡 Hint: Think about how memory structure changes the capabilities of these automata.
Question 2
True or False: PDAs can accept non-context-free languages.
- True
- False
💡 Hint: Recall the definition of context-free languages.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a non-deterministic PDA for the language L={a^n b^n | n ≥ 0}. Explain your state transitions.
💡 Hint: Remember the flow from pushing to popping based on the inputs.
Question 2
Prove that there exists a context-free grammar for the language {a^n b^n | n >= 0}. What are the production rules?
💡 Hint: Construct derivations from the start symbol to involve balanced pairs.
Challenge and get performance evaluation