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- The encryption and decryption for the Substitution is not working please fix that. #include <iostream>#include <cstring> using namespace std; class Cipher{public:virtual string encode() = 0;virtual string decode() = 0;}; class SubstitutionCipher : Cipher{// int key;string key;string input; // static string _encode(string input, int key);string _getValidKey();static bool isKeyValid(string key); public://constructorSubstitutionCipher(string msg, string k){this->input = msg;if (isKeyValid(k)){this->key = k;}else{this->key = _getValidKey();}} //the function for encryption/decryption (CaesarCipher algorithm)string encode();string decode();}; class CaesarCipher : Cipher{int key;string input; static string _encode(string input, int key); public://constructorCaesarCipher(string msg, int k) : input(msg), key(k) {} //the function for encryption/decryption (CaesarCipher algorithm)string encode();string decode();};…What is Null String? Please ans me quicklyHTML <nav> Perceivable Operable Understandable </nav> Question In the navigation section, add a nonbreaking space, then a black circle ● (●), and then another nonbreaking space after the word Perceivable. Do the same for Operable and Understandable. The below format is not working for me: <nav> Perceivable ● Operable ● Understandable ● </nav>
- In html, 0134134,John Smith, 555-567-2341,62 inches 0134135 June Lee 5554126347 0134136, Kim Thomas 5324126347, 138cm 149 cm Check if the Height field has "cm" at the end. If it does, strip that out, convert the number to feet, and turn it into a String in the form "xx feet"Given a Tuple, find out the number of times a string occurs. Write a script that uses tuple methods to count the number of elements in a tuple and the number of times a particular element appears in the tuple. Based on these counts, the script will also print a message to the terminal. Initialize a tuple, as shown in Snippet 5.37: cars = ('coupe', 'coupe', 'coupe', 'carbiolet', 'sedan') Use a tuple method to count the number of times the coupe element appears in the tuple cars, and assign it to a variable, fav. Use a tuple method to calculate the length of the tuple cars, and assign it to a variable, amt. If the number of times the coupe element appears in the tuple cars is more than 45%, print Too many coupes in the garage. to the terminal. If not, print You are all set with cars. to the terminal.Please add comments to my code.----------------------------------------------------- let currProblem = 1;let currScore = 0;let answer; function updateScoreAndQuestion() { let problem = document.getElementsByClassName("currentProblem")[0]; problem.innerText = currProblem.toString(); let score = document.getElementsByClassName("currentScore")[0]; score.innerText = currScore.toString(); if(currProblem <= 10) { newProblem(); } else { let hide = document.querySelectorAll('.show-hide'); hide.forEach(element => { element.style.display = "none"; currProblem = 10; problem.innerText = currProblem.toString(); }) }} function start() { let answers = document.querySelectorAll("li"); answers.forEach(element => { element.addEventListener("click", event => { let choice = element.innerText; if(choice.toString() === answer.toString()) {…
- //4. toggleCommentButton // Receives a postId as the parameter //b. Selects the button with the data-post-id attribute equal to the postId received as a //parameter //c. If the button textContent is 'Show Comments' switch textContent to 'Hide //Comments' //d. If the button textContent is 'Hide Comments' switch textContent to 'Show //Comments' //e. Suggestion (not required) for above: try a ternary statement //f. Return the button element Help fix this function in JavaScript const toggleCommentButton = (postID) => { if (!postID) { return; } const selectedButton = document.getElementById(selectMenu); //document.querySelector('button'); if (selectedButton != null) { selectedButton.textContent === "Show Comments" ? (selectedButton.textContent = "Hide Comments") : (selectedButton.textContent = "Show Comments"); } return selectedButton; };Write a JavaScript function that accepts a string as a parameter and find thelongest word within the string.Example string : 'Web Development Tutorial'Expected Output : 'Development'A kidnapper kidnaps you and writes a ransom note. He does not write it by hand to avoid having his hand writing being recognized, so he uses a magazine to create a ransom note. We need to find out, given the ransom string and magazine string, is it possible to create a given ransom note. The kidnapper can use individual characters of words.
- suppressPackageStartupMessages(library(tidyverse))library(nycflights13) #Q1Q1 <- flights %>% filter(carrier == "AA" | carrier == "EV" | carrier == "FL") %>% group_by(carrier) %>% summarise(mean_dist = mean(distance)) %>% mutate_if(is.numeric, round, digits = 2) I need the output to have numbers two places after the decimalLanguage c++: 1. Given string str is "Great", which choice has all matching expressions? Group of answer choices a. str == "Great" b. str == "Great", str == "great" c. str == "Great", str == "Great!" d. str == "Great", str == "great", str == "Great!" 2. What is the ending value of userString? (Note the question asks about userString, not about x). userString = "FaceBook";x = tolower(userString.at(4)); a. "Facebook" b. "FaceBook" c. "Faceook" d. "b" 3. Which expression evaluates to true if the corresponding characters of strings s1 and s2 are equal independent of case? Ex: "C" and "c" should be considered equal. Group of answer choices a. str1.at(i) == str2.at(i) b. str1.at((tolower(i)) == str2.at(tolower(i)) c. str1.at(i) == toupper(str2.at(i)) d. toupper(str1.at(i)) == toupper(str2.at(i)) 4. Given string str1 and string str2, which expression is true? str1 = "Hi";str2 = "Hello"; Group of answer choices a. str1 < str2 b. str1 >…3) Write a java program for displaying one flag at a time from nine countries flags. You may have a base Form with nine buttons (you may use Listview to trigger the events as well or any other method) and upon clicking one of the buttons (or selecting Listview item, or Combo box item) with the country name on it the image box / Label icon should display the country flag.
