Let L = { w ∈ { a, b, c }*| w contains bc once in the string}. Construct an FSA that recognizes L
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Let L = { w ∈ { a, b, c }*| w contains bc once in the string}. Construct an FSA that recognizes L
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- DFA for the set of strings over {a,b,c} in which there is at least one c if the string length is atleast 3Build a DFA that accepts the set of string over {a,b} in which the number of a’s is divisible by three.Let Σ={a, b}. Let L be the language of all strings that contain two b's in their middle third. In other words, L= {xyz |x, z ∈ Σ* and y∈ Σ*bΣ*bΣ*, where |x|=|z|>=|y| }. Show that L is not a CFL
- iven an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*' where: '?' Matches any single character. '*' Matches any sequence of characters (including the empty sequence). The matching should cover the entire input string (not partial).Using just the at, length, and substr string methods and the + (concatenate) operator, write a function that accepts a string s, a start position p, and a length l, and returns a subset of s with the characters starting at position p for a length of l removed. Don’t forget that strings start at position 0. Thus (“abcdefghijk”, 2, 4) returns “abghijk”def reverse_sentence(s: str) -> str:"""Given a sentence <s>, we define a word within <s> to be a continuoussequence of characters in <s> that starts with a capital letter andends before the next capital letter in the string or at the end ofthe string, whichever comes first. A word can include a mixture ofpunctuation and spaces.This means that in the string 'ATest string!', there are in fact only twowords: 'A' and 'Test string!'. Again, keep in mind that words start with acapital letter and continue until the next capital letter or the end of thestring, which is why we consider 'Test string!' as one word.This function will reverse each word found in the string, and return a newstring with the reversed words, as illustrated in the doctest below.>>> reverse_sentence('ATest string!')'A!gnirts tseT' """ do it on python, and do not use any list, import or split, or append or join.
- def reverse_sentence(s: str) -> str:"""Given a sentence <s>, we define a word within <s> to be a continuoussequence of characters in <s> that starts with a capital letter andends before the next capital letter in the string or at the end ofthe string, whichever comes first. A word can include a mixture ofpunctuation and spaces.This means that in the string 'ATest string!', there are in fact only twowords: 'A' and 'Test string!'. Again, keep in mind that words start with acapital letter and continue until the next capital letter or the end of thestring, which is why we consider 'Test string!' as one word.This function will reverse each word found in the string, and return a newstring with the reversed words, as illustrated in the doctest below.>>> reverse_sentence('watchNow')'watchwoN' >>> reverse_sentence('hot')'hot' """ do it on python, and do not use any list, import or split, or append or join.def reverse_sentence(s: str) -> str:"""Given a sentence <s>, we define a word within <s> to be a continuoussequence of characters in <s> that starts with a capital letter andends before the next capital letter in the string or at the end ofthe string, whichever comes first. A word can include a mixture ofpunctuation and spaces.This means that in the string 'ATest string!', there are in fact only twowords: 'A' and 'Test string!'. Again, keep in mind that words start with acapital letter and continue until the next capital letter or the end of thestring, which is why we consider 'Test string!' as one word.This function will reverse each word found in the string, and return a newstring with the reversed words, as illustrated in the doctest below.>>> reverse_sentence('ATest string!')'A!gnirts tseT'""" passdef reverse_sentence(s: str) -> str:"""Given a sentence <s>, we define a word within <s> to be a continuoussequence of characters in <s> that starts with a capital letter andends before the next capital letter in the string or at the end ofthe string, whichever comes first. A word can include a mixture ofpunctuation and spaces.This means that in the string 'ATest string!', there are in fact only twowords: 'A' and 'Test string!'. Again, keep in mind that words start with acapital letter and continue until the next capital letter or the end of thestring, which is why we consider 'Test string!' as one word.This function will reverse each word found in the string, and return a newstring with the reversed words, as illustrated in the doctest below.>>> reverse_sentence('ATest string!')'A!gnirts tseT' """
- You may assume the string contains only lowercase alphabets.Reference: https://leetcode.com/problems/valid-anagram/description/"""def is_anagram(s, t): """ :type s: str :type t: str :rtype: bool """ maps = {} mapt = {} for i in s: maps[i] = maps.get(i, 0) + 1 for i in t: mapt[i] = mapt.get(i, 0) + 1 return maps == maptLet L = { w ∈ { a, b, c }* | w contains exactly one b or starts with ac }.a) Construct an NFA that recognizes L.b) Construct an NFA that accepts any positive number of occurrences of various strings (not empty string)from this language concatenated together.Write a program in scala programming language to create a new string where scala is added to the front of a given string. If the string already begins with scala return the unchanged string. Please make an another function to generation of string