Consider the language L of strings over the alphabet Σ = {a, b} which contain an equal number of a’s and b’s, and the set of b’s is consecutive in the string, e.g., ab, abba, aabb, abbbaa, aaabbbbbaa, etc. Note that ε ∈ L for completeness (0 number of a’s is equal to 0 number of b’s, which are also consecutive). Show that this language is context-free by giving a context-free grammar.

Q: We flatten a list L by first removing all lists within L and replacing them with their members.…

A: Here is the prelog code. See below step for code and output.

Q: K. Remove . and , from the sentences in built-in sentences vector. Print the total number of words…

A: As the programming language is not mentioned here we are using Python The Python codes are given…

Q: Consider the set A of all strings of letters a-f of length 6. A few elements of this set are dcebac,…

A: Set A itself:Cardinality: The cardinality of set A is determined by the number of possible strings…

Q: Give a regular expression for the language of all strings over alphabet {0,1} that have exactly…

A: Given: A regular expression for the language of all strings over alphabet {0,1} that have exactly…

Q: A = {red, blue, green}, B = {red, red, green, purple}, C = {red, {green}, red, {red, green}, purple,…

A:

Q: Write Algorithm which computes all the orbits of a group, is a simple extension of Algorithm 1.…

A: Algorithm which computes all the orbits of a group, is a simple extension of Algorithm :

Q: Let xHead, yHead and zHead be the head pointers of 3 linked lists of integers (called X-list, Y-list…

A: All the code already you have. I have implemented only  merging the two list in third list  so copy…

Q: art I: Define a “word” as a maximal length sequence of alphanumerics. For example, in the line…

A: #include <stdio.h>#include <stdlib.h>#include <string.h>#include…

Q: Write an algorithm for addressing the subset-superset problem in string matching. That is, search a…

A: arr[] = {"catgc", "ctaagt", "gcta", "ttca", "atgcatc"} Initialize: temp[] = {"catgc", "ctaagt",…

Q: 2. Let {a, b, c} be an alphabet. List all of the words in Σ2

A: Σ2 means list of words of length 2 using the alphabets {a, b, c}

Q: Suppose a string Z is formed by interspersing the characters from other two strings X and Y. The new…

A: Start with first characters of X, Y and Z. If first characters of X and Z matches, move 1 character…

Q: Set Sizes III Consider the set A of all the numbers between (and including) 245 and 578, the set B…

A:

Q: Sets are collections (1) without defined order and (2) not allowing duplication. Multisets, also…

A: Here's the implementation of bag-union and bag-intersection in Racket: (define (bag-union bag1 bag2)…

Q: uppose three algorithms A, B, and C, can be implemented to perform a task. The ilgorithms have the…

A: Answer:-         C < A < B   explanation:- first, we will know, what is Time Complexity?…

Q: , C, D, E, F. (In particular, a hexadecimal string can have leading 0’s.)

A: Then within the hex enumeration System we have a tendency to use the ranges from zero to nine and…

Q: DFA for the set of strings over {a,b,c} in which there is at least one c if the string length is…

A: Here is the solution:

Q: A string w of a's and b's is valid if it satisfies one of the following conditions: • w is the empty…

A: We can implement the program as follows:   Algorithm String_Validity( String a, String b , String…

Q: Write up what the properties of sets, lists, vectors and strings are and whether they are mutable or…

A: Write up what the properties of sets, lists, vectors and strings are and whether they aremutable or…

Q: In each case, you should provide two strings in L and two strings not in L in the spaces provided.…

A: I Have answered this question in step 2.

Q: Exercise 2 Define a function member of type ''a that member (e, L) is true if and only if e is an…

A: Implementation of the member function: let rec member (e, L) =  match L with  | [] -> false  | x…

Q: Let ALLITERATIVE-PAIRS be the language of odd-length strings of length at least 3 over the alphabet…

A: In this question we have been given a context-free grammar for the language ALLITERATIVE-PAIRS.The…

Q: solve in C please. Implement the following two functions that get a string, and compute an array of…

A: #include "headers.h" #include "processmanager.h" #include "history.h"   int count_tokens(char *,…

Q: NFA 0’s near end or 1 at end: Write a nondeterministic finite automaton with at most 10 states that…

A: A Nondeterministic Finite Automaton (NFA) is a theoretical machine used in the study of…

Q: onsider the language consisting of all strings of properly balanced square brackets. The context…

A: Given Grammar Rules : 1. <Goal> ::= < List >2. <List> ::= < Pair > < List…

Time Complexity

In computer science, the computational complexity that is measured in terms of time is referred to as time complexity that defines how long it takes a computer to execute an algorithm. An algorithm's time complexity is measured by the the amount of time required to execute each statement of code in the algorithm. If a statement is set to execute repetitively, the number of times it will be N multiplied by the time it takes to run that function each time is equal .