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GATE CSE & IT · Context-Free Languages · 1997-2025
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Hopcroft-Ullman / Dragon Book
Automata, languages, parsing, syntax-directed translation
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All concepts →Which ONE of the following languages is accepted by a deterministic pushdown automaton?
Consider the language L = { $${a^n}|n \ge 0$$ } $$ \cup $$ { $${a^n}{b^n}|n \ge 0$$ } and the following statements. I. L is deterministic context-free. II. L is context-free but no...
The language $$L = \left\{ {{0^i}{{21}^i}\,|\,i \ge 0} \right\}$$ over the alphabet $$\left\{ {0,1,2} \right\}$$ is
Consider the following statements about the context-free grammar $$G = \left\{ {S \to SS,\,S \to ab,\,S \to ba,\,S \to \varepsilon } \right\}$$ $$1.$$ $$G$$ is ambiguous $$2.$$ $$G...
Which of the following statement is true?
Which of the following languages over $$\left\{ {a,b,c} \right\}$$ is accepted by Deterministic push down automata?