Question: 1 120 pts] a) Write a grammar for the language consisting of strings that have n copies of the letter x followed by 2n copies

1 120 pts] a) Write a grammar for the language consisting of strings that have n copies of the letter x followed by 2n copies of the letter y, where n o. For example, the string "xxyyyy" is in language but "xxyyy" and "yyx" are not. Explain why your grammar does the job. [10 pts b) Write the derivation and draw the parse tree for the sentence "xyyyyyy" as derived from the grammar of part a). [10 pts)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

LAST DGT 12 Q1. (24 pts) a. (4 pts) What is XLST? What is input and output of a XSLT processor? b. (6 pts) Describe, in English, the language defined by the following grammar: a aa b bb c cc c. (8...

Plz solve those questions. Thank you . AssignmentIdentifier [Expression] Expression Expression => Conjunction { " Conjunction } ConjunctionEquality && Equality EqualityRelation Equop Relation...

Assignment 2 Write a regular expression for Java identifiers consisting of letters, digits, $ , and the underscore character ' ? ? , and starting with a letter, $ or underscore. Write EBNF...

3. (10 points) Either prove or disprove the ambiguity of the following grammar. SA AA+A id id a b c 4. (10 points) Rewrite the following grammar to add the ++ and -- unary operators of Java....

3. Prove that the following grammar is ambiguous: (10 pts) -> .> > abc 4 Write a grammar for the language consisting of strings that have n copies of the letter followed by the same number of copies...

1 ) What is the difference between syntax and semantics? 2 ) Why is it important for a grammar to be unambiguous? 3 ) Show that the following grammar is ambiguous show two distinct parse trees for...

This is a programming principle question. Please let your answer make sense. If your answer is not clear and understandable, I give dislike it. The question that has been asked is only this long,...

4. Why is it important for a grammar to be unambiguous ? 5) (3pts) Write a regular expression for the following: S = {a,b} L = { all words that have two letter as or two letter bs in consecutive...

Problem 1. Describe, in English, the language defined by the following grammar: + a | a + b b + c C Problem 2. Write a grammar for the language consisting of strings that have n copies of the letter...

Help needed (3.12pts) Consider the following grammar: KA> KA> ba nul1 Which of the following sentences are in the language generated by this grammar? is the starting non-terminal (a) baab (b) bbbab...

Information about PepsiCos five primary segments is provided below (dollars in millions). The information was taken from the companys 2012 SEC Form 10-K. REQUIRED: a. Compute the percent each segment...

1. Scores on the American College Test (ACT) follow roughly a normal distribution with mean = 20.9 and standard deviation 0 = 5.6. Scores on the Scholastic Aptitude Test (SAT) follow roughly a...

Mary is traveling to Europe and has $ 1 , 0 0 0 ( U . S . ) that she wants to convert to euros. The current exchange rate is 0 . 9 0 euros = $ 1 ( U . S . ) . How many euros will she receive in this...

CT Corp Comprehensive Question Canadian Tire Corporation, Limited (Canadian Tire) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

B What outcomes are possible here? Can you provide advice to help them stay together? Should you?

Have you ever opted for separation as a way to end a conflictwith a friend, a romantic partner, or a roommate? Was it difficult for you to separate? Are there some relationships for which separation...

C What do you think of Steve mentioning another girl? Would it affect you differently if Ellen were just a friend, and not your sister?