Computers and Technology, 22.04.2020 22:16 androw4116
Consider the language L = {w |w β {0, 1} β , 2 Γ #0 (w) = #1 (w)} , here #0(w) and #1(w) means the numbers of 0s and 1s in w respectively. That is, this is the language consisting of all strings with exactly twice as many 1s as 0s: for example, 101 β L, 010 β/ L. In this problem we will show how to construct a context-free grammar for it. (a) (2 points) For a length n word x, we define a function f (i) = (2 Γ number of 0s in locations [1 . . . i]) β (number of 1s in locations [1 . . . i]). Show that we have f(i) = f(j) for some i < j if and only if the substring in indices [i + 1, . . . j] has exactly twice as many 1s as 0s (i. e. xi+1,i+2,...,j β L). (b) (2 points) Show that if x β L starts with 0, then it can be written as x = 0w1y1z where w, y, and z are each strings with twice as many 1s as 0s (aka. w, y, z β L).
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Computers and Technology, 22.06.2019 19:20
1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.
Answers: 1
Computers and Technology, 22.06.2019 23:00
Which type of tab stop is most for weights and measurements?
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Computers and Technology, 24.06.2019 06:00
Hey i really need some solving this problem: 1. encrypt this binary string into cipher text: 110000. include in your answer the formula the decoder would use to decrypt your cipher text in the format (coded answer) x n mod (m) = y & 2. decrypt this cipher text into a binary string: 106 you.
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Computers and Technology, 24.06.2019 15:30
Emma is using an artificial intelligence system, which contains information on botany, to identify a type of plant from an image. what type of ai is emma using?
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Consider the language L = {w |w β {0, 1} β , 2 Γ #0 (w) = #1 (w)} , here #0(w) and #1(w) means the n...
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