3. Prof. Poirot needs help. He has a regular expression r and wants to write a regular expression s that generates the the complement of L(r). Can you give him an algorithm for this task? Write it in precise ond ol0or Enolish

3. Prof. Poirot needs help. He has a regular expression r and wants to write a regular expression s that generates the the complement of L(r). Can you give him an algorithm for this task? Write it in precise ond ol0or Enolish

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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The sieve of Eratosthenes is a way of computing all the prime numbers below a certain number. (A prime number is a number that is only divisible by itself and 1). Implement this algorithm: Implement a function cross_out_multiples that takes as arguments a list of boolean values (true/false) called is_prime and a number n. The function sets the boolean values at all multiples of n (2*n, 3*n, 4*n ...) that are in the list to false. Implement a function sieve(n) which gives back a list of all primes below n. Put your code in sieve.py This program is tested via unit tests.
Give reductions from the hello-world problem to each of the problems below. Give informal descriptions for your program transformations. The hello-world problem is: Given a program and an input, does the program print hello-world as the first 11 characters that it prints? It is easy to see that this modified hello-world problem is also undecidable by the same proof by contradiction we discussed in the class. a. Given a program and an input, does the program ever produce any output? b. Given a program and an input, does the program eventually halt?.
Java programming homework Please help me with question 13.25
Please give me correct solution in type Solution only.
Use Java
Consider the expression (6+3*4)/(7-1) In order to evaluate the expression it must be converted to Postfixnotation. Describe the process of conversion, then use that processto convert the above expression to Postfix. Note that if you don'tremember exactly how to process parenthesis, simply process them ina separate area until you get to the end of the parenthesized partof the expression. Then convert the expression to Postfix NOTE: You must show all work. Once you have your Postfix expression, now describe how to evaluateit. Then show the evaluation steps for the expression to generate afinal result. Again in order to get full credit you must show allwork.
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this code only prints random dna letters where is the game there are the questions below Find the complement of a DNA strand: recall that a DNA strand is a combination of fouruppercase letters; A, T, C, and G. The letters A and T are complements, and the letters Cand G are complements. To find the complement of a DNA strand you must replace eachcharacter with its complement. For example, ATCGG is the complement of TAGCC andCCC is the complement of GGG. Your program must show a DNA of a predefined lengthto the player and ask for its complement.2. Find the reversed DNA strand: the order of the characters in a DNA strand should bereversed. Examples: GCTAA is the reverse of AATCG and AA is the reverse of AA. Yourprogram must show a DNA of a predefined length to the player and ask for the reversedstrand.3. Find the compressed DNA strand: all repeated characters in a DNA strand should bereplaced by the number of repeats followed by that character once. For example, 2C3ATis the compressed…
program bust be solved by python anaconda .My variant number is ( 21 )
find a counterexample for the statement,
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