O Choice (A) O Choice (B) O Choice (C) O Choice (D) O None of the above

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Recall that n- (w) denotes the number of symbol z appearing in string w.
Which language L is recognized by the pushdown automaton whose state diagram is shown below?
а, є —а
b, a → €
a, e → a
90
E, E + E
6, E + €
92
93
(A) L={ a'b' |i > 0, j 2 0 }
(B) L={ a+!bi | i 2 0}
(C) L={a*b³ | i >j 2 0 and i > 0 }
(D) L={ aw | we {a, b}* and 0 < ng(w) < na(w) }
Choice (A)
Choice (B)
Choice (C)
O Choice (D)
None of the above
Transcribed Image Text:Recall that n- (w) denotes the number of symbol z appearing in string w. Which language L is recognized by the pushdown automaton whose state diagram is shown below? а, є —а b, a → € a, e → a 90 E, E + E 6, E + € 92 93 (A) L={ a'b' |i > 0, j 2 0 } (B) L={ a+!bi | i 2 0} (C) L={a*b³ | i >j 2 0 and i > 0 } (D) L={ aw | we {a, b}* and 0 < ng(w) < na(w) } Choice (A) Choice (B) Choice (C) O Choice (D) None of the above
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