Answered: regular set? Also write R.E for the…

Engineering

Computer Science

regular set? Also write R.E for the following and explain,

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

For Sob 22 - write up what the properties of sets, lists, vectors and strings are and whether they are mutable or immutable. Then consider the class of problems that they are best for. Use some code to illustrate your points. e.g. if you have a function that solves a problem using lists, then you can say why you can/can’t use vectors for it or sets etc. Based on dr racket. e.g.
please do j, k, and l thanks in advanced
6. List the elements of the following sets. A= {x | x is a real number such that x2 = 1} B= {x| x is an integer such that x2 - 3 = 0}
Implement the following function which compares two strings without using the library function. Prototype: int compare(char *str1, char *str2). The compare function returns 0 if str1 is equal to str2, returns 1 if str1 is greater than str2, and returns -1 if str2 is greater than str1. Then print the information in the main function.
Does it hold for lists? :Write a function holds_for_lists : ’a list -> ’b list -> (’a -> ’b -> bool) -> bool = that takes an ’a list, an ’b list, a function f: ’ a -> ’b ->bool and returns true if and only if • The two list are of the same length, and • (f a b) is true for all pairs a, b such that a is from the first list, b is from the second list, and a and b appear in the same position in their lists. (oCaml)
What are the properties of sets, lists, vectors, strings and are they mutable or immutable? What type of problems is each one best used for over the other type? E.g if I have a function that solves a problem using a list, why wouldn't I be able to use a vector or set for it? Can I have some code that shows this in Racket?
Using only a single call to filter, map, or reduce, perform the following tasks. You must use lambda expressions for the function arguments. You may assume the input lists have at least one element. a. Given a list of strings strs, create a function call that returns an iterable object that provides the last character of each string in strs. You may assume that each string in strs has at least one character. b. A list of nonnegative fractions (called fractions) consists of tuples of two integers. The first integer in each tuple is the numerator (must be greater than or equal to zero) and the second integer in each tuple is the denominator (must be strictly greater than zero). Given this list fractions, create a function call that returns the fraction with the highest value. If there are multiple fractions tied for the highest value, it suffices to return any one of them.
Sets are collections (1) without defined order and (2) not allowing duplication. Multisets, also called “bags” are collections without defined order but which permit duplication, i.e., more than one element. We define the function #(a B) to be the number of occurrences of the element a in the bag B. For example, #(1, [1 1 2 3 4 4 5]) is 2 and #(5, [1 1 2 3 4 4 5]) = 1. Bag union and intersection are defined in terms of #. bag-union: List × List -> ListThis function should take as arguments two lists representing bags and should return the list representing their bag-union. bag-intersection : List × List -> ListThis function should take as arguments two lists representing bags and should return the list representing their bag-intersection. Allowed functions. Your code must use only the following functions:1. define, let2. lambda3. cons, car, cdr, list, list?, append, empty?, length, equal?4. and, or, not5. if, cond6. +, -, /, * No loops or use of hash Racket code only please.…
Implement the following C function: repeatChars take in a null-terminated string as an argument and returns a newly- allocated null-terminated string that repeats every character in the input string. For example, repeatChars(''abcd'' )=''aabbccdd'' . You may use the strlen function to determine the length of the string your implementation does not need to check whether malloc returns NULL C Your implementation should not modify the input string
Question 1 5 pts A regular expression is shorthand for a set of strings. For example (b+ba)* ba (a+ab)* represents a set of strings for which the first two elements (when listed in length order with same length strings listed in alphabetical order) are: ba and baa. What are the next three strings in this sequence? Next string: Next after that: Next after that:
Must not be copy. These are wrong code with explanation I need. I did not understand logic and all I would downvote for copied code Thank you
I need correct answer unique answer for this. Don't copy from anywhere otherwise I'll report your account for sure. Last time I received wrong answer for this. This time i need right answer. Do not send wrong and plagiarism response