CONVERSION OF REGULAR EXPRESSION TO FINITE AUTOMATA IN FLAT/ATCD #8 скачать в хорошем качестве

CONVERSION OF REGULAR EXPRESSION TO FINITE AUTOMATA IN FLAT/ATCD #8

This video explains how to eliminate ambiguous grammar in Formal Languages. The concepts are explained step by step with clear formulas and examples, making it easy to understand for FLAT / ATCD students. Topics covered in this video: 🔹 Elimination of Left Recursion (0:16) This method is used for productions of the form: A → Aα | β where A is a non-terminal and α, β can be terminals or non-terminals. The video explains how to convert these productions into: A → βA′ A′ → αA′ | ε An example using the grammar: E → E + T | T (1:05) is explained to demonstrate the transformation. 🔹 Elimination of Left Factoring (5:07) Left factoring is applied when multiple productions have a common prefix (α), such as: A → αβ1 | αβ2 | αβ3 These productions are rewritten as: A → αA′ A′ → β1 | β2 | β3 An example using the grammar: S → BSS A | BSB (5:52) is discussed to clearly explain the steps involved in left factoring. This video is helpful for students preparing for exams and interviews in Formal Languages and Automata Theory.