Build a DFA that accepts the set of string over {a,b} in which the number of a’s is divisible by three.

f the domain consists of all integer numbers, then the truth value of  ∃x(x2  = -1) is:

Construct dfas that accept the followings: a. Set of all strings on {0,1} that do not contain two consecutive 0s b. Set of all stings on {0,1} that end with two 0s

Scrabble Scrabble is a game where players get points by spelling words. Words are scored by adding together the point values of each individual letter. Define a function scrabble_score (word:str) -> int that takes a string word as input and returns the equivalent scrabble score for that word. score = {"a": 1, "c": 3, "f": 4, "i": 1, "1": 1, "o": 1, "r": 1, "u": 1, "t": 1, "x": 8, "z": 10} For example, "b": 3, "h": 4, "n": 1, Your Answer: == 20 assert scrabble_score("quick") assert scrabble_score("code") == 7 1 # Put your answer here 2 Submit "e": 1, "d": 2, "g": 2, "k": 5, "j": 8, "m": 3, "q": 10, "p": 3, "s": 1, "w": 4, "v": 4, "y": 4,

OZ PROGRAMMING LANGUAGE Develop a function {MapTuple T F} that returns a tuple that has the same width and label as the tuple T with its fields mapped by the function F. For example, local fun {Sq X} X*X end in {MapTuple a(1 2 3) Sq} end should return a(1 4 9). Hint: A tuple is constructed with {MakeTuple L N}, where L is the label and N is the width of the tuple.

hideshow Write a function hideshow that accepts two string arguments, an input string and a masking string. The masking string is a string consisting of '0's and '1's that has the same length as the input string. The function then returns a new string that is the same as the input string, except that it is masked. That is, in any position where the masking string contains a '0' the input character is replaced by a '#', whereas if the masking string contains a '1', the character is unchanged. Sample usage: >>> hideshow('apple', '11001') 'ap##e' >>> hideshow('apple', '00000') '#####' >>> hideshow('apple', '11111') 'apple' >>> hideshow('abcdefghijklmnopqrstuvwxyz', 13*'01') '#b#d#f#h#j#1#n#p#r#t#v#x#z' >>> hideshow 'df###re##', '101010101' ) 'd#####e##' >>> hideshow( 'df###re%%', '101010101' )=='d#####e##' True

Programing C

What is the role of indexing in optimizing queries involving complex data types?

4. Complete the function show_upper. This function takes one parameter - a string (s). It should return a string made up of all the upper-case characters in s. For example, if s is “aBdDEfgHijK” then show_upper should return “BDEHK”. It should return the upper-case string - not print it. Do not change anything outside show_upper.

plase skip it if you dont know the correct answer i need it urgent. Will doewnvote in case of wrong or copied answers from chegg or bartleby! A regular expression (shortened as regex or regexp; also referred to as rational expression) is a sequence of characters that specifies a search pattern. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings, or for input validation. using regex create a python program to verify the string having each word start from 'e'? It should return True otherwise false.