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(10 points each) Find a context-free grammar for the following languages: (a) L = {w {a,b}* : na(w) # n(w)} on 2 = {a,b}. (b)
(10 points each) Find a context-free grammar for the following languages: (a) L = {w {a,b}* : na(w) # n(w)} on 2 = {a,b}. (b) L= {a".b" : n #m - 1} on = {a,b}. (c) L= {a".w.wp.b" : we*,n > 1} on = {a,b}. (Note that wlis the reversed string of w.)
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Advanced Database Systems
Authors: Carlo Zaniolo, Stefano Ceri, Christos Faloutsos, Richard T. Snodgrass, V.S. Subrahmanian, Roberto Zicari
1st Edition
155860443X, 978-1558604438
