a) Give an example of a string containing 11 that is accepted by the following automaton. b) Give an example of a string of length 8 that is rejected by the following automaton. c) Describe the language of this automaton in plain English. d) Describe the language of this automaton using Regular expression.
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A: Theory of Computation Question. Answer given in next section.
Q: 3 Find a regular expression that denotes the language accepted by the below finite automaton.
A: The answer is
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A: The Answer is in given below steps
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A: The answer for the above question is as follows
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A: a)string containing 11 that is accepted by the following automaton is: 110101 or 101101…
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A: The answer for the given question is as follows.
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A: The answer as follows
Q: use the language operations (repetition, union, and concatenation). construct an NFA that realizes…
A: The answer as follows
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A: a) Language represented by : (((a*a)b)Ub) U means Union means Merging Note : * means 0 or more…
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A:
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A: Here is the solution :
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A: a.2 valid strings; babaabbc, cabaabcb2 Invalid String: aaaa, bbbbbb.i. RE: (b + ab)* (a + λ)ii. 3…
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A: Solution for the above question is solved in step 2 :-
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A: The above question is answered in step 2:-
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A:
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A: We need to write regular expression for given scenarios.
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- A postfix expression is an expression in which each operator follows its operands. Figureabove shows an examples of postfix expressions.The advantage of postfix form is that there is no need to group subexpressions in parentheses or to consider operator precedence. One may have used pocket calculators that require entry of expressions in postfix form.Write a program that simulates the operation of a calculator by scanning an integer expression in postfix form and displaying its result. The program should push eachinteger operand onto the stack. When an operator is encountered, the top two operands are popped, the operation is performed on its operands, and the result is pushed back onto the stack. The final result should be the only value remaining on the stack when the end of the expression is reached. This program scans a postfix expression and evaluates it. The Postfix expression must be followed by a space and a '?' to mark the end of the expression. One must use stack and the…3. A palindrome is a sentence that contains the same sequence of letters read-ing it either forwards or backwards. A classic example is "Able was I, ere I saw Elba." Write a recursive function that detects whether a string is a palindrome. The basic idea is to check that the first and last letters of the string are the same letter; if they are, then the entire string is a palindrome if everything between those letters is a palindrome. There are a couple of special cases to check for. If either the first or last character of the string is not a letter, you can check to see if the rest of the string is a palindrome with that character removed. Also, when you compare letters, make sure that you do it in a case-insensitive way. Use your function in a program that prompts a user for a phrase and then tells whether or not it is a palindrome. Here's another classic for testing: "A man, a plan, a canal, Panama!"Write a lisp function that prints out the calendar for the current month. This function should take 2 parameters: the day of the week that the month starts from as an index (0 for Sunday, etc.) and the number of days in the month. For example, if you call the function (calendar 2 30) Print the initial of each day on the first line using the list of days defined at the previous exercise, the capitalized symbol-name as before, and the function substring to extract the first letter of the string. For example, the call: (substring "Sunday" 0 1) returns the string "S".
- IN C PROGRAMMING LANGUAGE AND COMMENT EVERY STEP PLEASE Write a program that takes verbs and forms their past tense on the basis of these rules: a. If verb ends in “e”, add “d”. b. If verb ends in “ss” or “gh”, add “ed”. c. In all other cases, inform the user that the verb may have an irregular past tense. Print each verb and its past tense. Try the following data: smile discuss confess declare laugh run cough teach buyNLP Q#2: Write regular expressions for the following languages. By "word", we mean an alphabetic string separated from other words by whitespace, any relevant punctuation, line breaks, and so forth. 1. the set of all strings with two consecutive repeated words (e.g., "Humbert Humbert" and "the the" but not "the bug" or "the big bug"); 2. all strings that start at the beginning of the line with an integer and that end at the end of the line with a word; 3. all strings that have both the word grotto and the word raven in them (but not, e.g., words like grottos that merely contain the word grotto); 4. Demonstrate a pattern to check if the email address is valid. 5. Demonstrate a pattern to verify the validity of a phone number, and check if it belongs to the Pakistani Mobile Network. 6. Demonstrate a RE to remove symbols and non-alphanumeric characters from the string paragraph. 7. Demonstrate a RE to remove URLs and HTML tags from the text string.A palindrome is a sentence that contains the same sequence of letters reading it either forwards or backwards. A classic example is '1\.ble was I, ereI saw Elba." Write a recursive function that detects whether a string is apalindrome. The basic idea is to check that the first and last letters of thestring are the same letter; if they are, then the entire string is a palindromeif everything between those letters is a palindrome.There are a couple of special cases to check for. If either the first orlast character of the string is not a letter, you can check to see if the restof the string is a palindrome with that character removed. Also, when youcompare letters, make sure that you do it in a case-insensitive way.Use your function in a program that prompts a user for a phrase andthen tells whether or not it is a palindrome. Here's another classic fortesting: '1\. man, a plan, a canal, Panama!"
- Please Answer in C++ language only Today the chef decided to cook some tasty dishes from the ingredients in his kitchen. There is an NN of components, represented by the strings S1,S2, .... SN. The chef took all the ingredients, put them in a cauldron and mixed them. In the cauldron, the letters of the strings representing the ingredients are completely shuffled, so that each letter appears in the cauldron as many times as it has appeared in all the strings combined; now the cook can take out one letter from the cauldron at will (if that letter appears in the cauldron more than once, it can be taken out that many times) and use it in a dish. Complete Food is a "chef" chain. Help the chef find the maximum number of complete meals he can make! Input 1 5 codechef chefcode fehcedoc cceeohfd codechef Output 5Find two strings belong to the language represented by the following regular ?expressions * a(a|b)*a إجابتك * aa+bb إجابتك * *baa إجابتك *(ab+b) إجابتكA palindrome is a string that reads the same both forward and backward. For example, the string "madam" is a palandrome. Write a program that uses a recursive function to check whether a string is a palindrome. Yourprogram must contain a value returning recursive function that returns true is the string is a palindrome andfalse otherwise. Do not use any global variables; use the appropriate parameters.
- Write a working function in Lisp: a function that takes one parameter that you can assume to be a symbol named after a day of the week (no need to check it), such as 'monday, and returns the symbol for the next day. For example, (next-day 'tuesday) should return the symbol 'wednesday. Implement this function with a complex conditional.DescriptionA researcher is analyzing DNA. A DNA can be represented as a string composed of the characters A, G, C, or T.One day, researchers found a strange DNA, which is Smooth Repeated DNA. The DNA is represented by a string that has infinite length. The string has a repeating pattern, i.e. the DNA string 0 is repeated an infinite number of times. For example, if0 = "????", then = "???????????? . . . ".According to researchers, a DNA is said to be special if it contains substrings . Determine whetheris a substring of . Squad FormatA line containing the two strings 0 and . Output FormatA line that determines whether it is a substring of . Issue “YES” ifis a substring of . Output “NO” otherwise. Example Input and Output Input Example Example Output AGCT GC YES AGCT TA YES AGCT GT No AGCT TAGCTAGCT YES AGGACCTA CTAA YES Explanation ExampleIn the first to fourth test case examples, is worth "???????????? . . . ". The part in bold is one of the…A palindrome is a string that reads the same forwards or backwards; for example dad, mom, deed are palindromes (i.e., reversing a palindrome produces the same string). Use C++ Programing language Write a recursive, boolean-valued function, isPalindrome that takes a string as a parameter and returns whether the string is a palindrome. A string, s, is a palindrome if: s is the empty string or s consists of a single letter (which reads the same back or forward), or the first and last characters of s are the same, and the rest of the string (i.e., the second through next-to-last characters) form a palindrome. Write a test program that reads a string from the standard input device and outputs whether the input string is a palindrome or not.