: Each chapter ends with multiple-choice questions (with answers) and practice problems to help students prepare for competitive exams.

This section introduces the simplest computational models, which possess a finite amount of memory.

Invest in a second-hand physical copy or spend the price of two pizzas on the official eBook. Your future self, studying for a compiler design interview or a GATE rank, will thank you.

: Do not just read a transition table or diagram. Physically sketch the state transitions to understand why specific states exist.

In a DFA, for each state and input symbol, there is exactly one transition to a next state. The book excels at teaching readers how to construct transition tables and state diagrams to recognize specific patterns, such as strings ending in a particular substring or containing an even number of zeros. Non-Deterministic Finite Automata (NFA)