Fundamental Concepts • • • Languages o A language is a subset of the set of all possible strings formed from a given set of symbols. o There must be a membership criterion…
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Scanning • A process of recognizing the lexical components in a source string • Type-3 grammars: A ::= tB|t or A ::= Bt|t • Type-2 grammars: A ::= π • The lexical…
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Finite Automata Finite Automata Two types ± both describe what are called regular languages ± Deterministic (DFA) ± There is a fixed number of states and we can only be…
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Finite Automata Finite Automata Two types ± both describe what are called regular languages ± Deterministic (DFA) ± There is a fixed number of states and we can only be…
1. Finite Automata 2. Finite Automata • Two types – both describe what are called regular languages – Deterministic (DFA) – There is a fixed number of states and…