Construct a regular expression defining each of the following languages over the alphabet I = {a, b} i) All strings in which the letter b is never tripled. This means that no word contains the substring bbb
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Course Name: Theory of Automata
Requirement: Plz don't copy the answer from google
Q. Construct a regular expression defining each of the following languages
over the alphabet I = {a, b}
i) All strings in which the letter b is never tripled. This means that no
word contains the substring bbb
Step by step
Solved in 2 steps
- Q: Write regular expression for the following languages. All strings in which b is never tripled. It means that no words contain the substring bb. All the strings accepting b as second letter. Regular expression that accept only prime numbers. All the strings that start with aa, end with bb, and have alternating substrings ba in between. Language of all those strings with length greater than 3S is a set of strings recursively defined as follows. Base case: Every variable from the set {a, b, c, d, e, f} is in S. Recursive rules: If x = S and y = S, then: 1. (x + y) Є S 2. x.yЄ S Indicate which expressions are in S. ☐ (d.e.a) a+b a.b.c ☐ (a + d).eCodeW For fun X C Solved https://codeworkou... 臺亂 CodeWorkout X272: Recursion Programming Exercise: Is Reverse For function isReverse, write the two missing base case conditions. Given two strings, this function returns true if the two strings are identical, but are in reverse order. Otherwise it returns false. For example, if the inputs are "tac" and "cat", then the function should return true. Examples: isReverse("tac", "cat") -> true Your Answer: 1 public boolean isReverse(String s1, String s2) { 2. if > 3. 4. else if > return true; return false; 5. 6. else { String s1first = String s2last return s1first.equals (s2last) && 51. substring(0, 1); s2, substring(s2.length() 1); 7. 8. 6. isReverse(s1.substring(1), s2.substring(0, s2.length() 1)); { 12} 1:11AM 50°F Clear 12/4/2021
- Specification: Read sentences from the user until * is entered. Show the number of words in each sentence that contain a stretch of non-z characters with exactly 2 vowels. A stretch starts from the start of the word or after a 'z'. A stretch terminates just before another 'z' or at the end of the word. Examples: 1. Matching words: zoo, azozooza, GONZALEZ 2. Non-matching words: ozo, azoooza The sentences contain no punctuation, the words are separated by one or more spaces, and the characters may be upper or lower case. Keep reading sentences until the user enters "*". Sample I/O: Sentence: azoooza azooza zoo azoo Matching words = 3 Sentence: GONZALEZ passes the ball to VAZQUEZ Matching words = 3 Sentence: azozototzeti Matching words = 1 Sentence: * Done19. Given: Σ = {0, 1}, write regular expressions for the following languages: Strings that have a length of at most three. Strings that have a length divisible by 3. Strings that have no more than two 0s. Strings that do not end with 11. Strings that consist of only 1s and interpreted as a binary number are evenCorrect answer will be upvoted else Multiple Downvoted. Computer science. You are given a string s, consisting of brackets of two types: '(', ')', '[' and ']'. A string is called a regular bracket sequence (RBS) if it's of one of the following type empty strin '(' + RBS + ')' '[' + RBS + ']' RBS + RBS where plus is a concatenation of two strings In one move you can choose a non-empty subsequence of the string s (not necessarily consecutive) that is an RBS, remove it from the string and concatenate the remaining parts without changing the order What is the maximum number of moves you can perfor Input The first line contains a single integer t (1≤t≤1000) — the number of testcases Each of the next t lines contains a non-empty string, consisting only of characters '(', ')', '[' and ']'. The total length of the strings over all testcases doesn't exceed 2⋅10 Output For each testcase print a single integer — the maximum number of moves you can perform on a given string…
- String Pair // Problem Description // One person hands over the list of digits to Mr. String, But Mr. String understands only strings. Within strings also he understands only vowels. Mr. String needs your help to find the total number of pairs which add up to a certain digit D. // The rules to calculate digit D are as follow // Take all digits and convert them into their textual representation // Next, sum up the number of vowels i.e. {a, e, i, o, u} from all textual representation // This sum is digit D // Now, once digit D is known find out all unordered pairs of numbers in input whose sum is equal to D. Refer example section for better understanding. // Constraints // 1 <= N <= 100 // 1 <= value of each element in second line of input <= 100 // Number 100, if and when it appears in input should be converted to textual representation as hundred and not as one hundred. Hence number…b) Let E = {the letters/symbols of your own name} Suppose you want to construct the following language: "The set of all strings that accept any string of your last name length but will not accept your last name as a string." Draw a corresponding NFA. My Name is Abdul Batenregular expressions Exercise: Describe the languages denoted by the following regular expressions: ◦a) a(a|b)*a..a) a*ba*ba*ba*.b) (aa|bb)*((ab|ba)(aa|bb)*(ab|ba)(aa|bb)*)*. and gave me example for a and b contain 20 String
- Design Regular Expressions for the following languages. ii. Strings representing a word with length divisible by 4 and contains at least 1 vowel. E={a, b, c,..., z} iii. Strings that contain '01' as substrings at any place except at the beginning or at the end. It accepts 1010, 0101,110110, etc. but does not accept 01, 0110, 1101, 00, etc. E={0, 1} iv. Length of the strings cannot be less than 3 characters and the number of 1's is divisible by 2. It accepts, 101, 1001, 1111, etc. however rejects e, 0, 1, 11, 100, 111, etc. E={0, 1} v. Strings where no character appears consecutively more than 3 times? E={a,b,c}Colouring Book Having spent the last couple of hours grading assignments, I decide it’s time for a break. I take out my favourite colouring book, turn to a random page I haven’t coloured in yet, and lay it on my desk. I then take out all my n crayons and line them up on the desk (it’s a very long desk). The colour of the ith crayon is a string c[i] (e.g. "blue"). Many of the crayons have the same colour. In fact, no matter how many crayons I have, there are at most 30 distinct colours amongst them. To start colouring, I always take a sublist (see Q1 for a definition) of the crayons laid on the desk and put away the rest (too many options can be overwhelming and can lead to indecision). I take a look at the line art in front of me and wonder, “How many different colours do I need to make this look great? One? Two? Maybe three?”. Now you understand my dilemma and are fully aware of my indecision. You kindly decide to help me out by telling me for every number k, if I were to use k…java: Run length coding is a method to represent a string in a more compact manner. Each character that occurs more than 2 times in a row is represented by the character and a number following it. Two examples are: "abba" → "abba""abcccbbbba" → "abc3b4a"Write a function that calculates how many characters the encoded string is shorter than the original.