Write a method that returns the frequency of each characters of a given String parameter. If the given String is null, then return null If the given String is empty return an empty map

Implement the copy assignment operator= for the StringVar class using the options given on the right side window. Place the code into the left side using the arrows. It is possible to get the test case correct but not complete NOTE: Be careful! There are decoys! The this pointer is used extensively.. Assume that StringVar.h has the following declaration: #include <iostream> class StringVar {public:StringVar() : max_length(20) { // Default constructor size is 20value = new char[max_length+1];value[0] = '\0';}StringVar(int size); // Takes an int for sizeStringVar(const char cstr[]); // Takes a c-string and copies itStringVar(const StringVar& strObj); // Copy Constructor~StringVar(); // Destructorint size() const { return max_length; } // Access capacityconst char* c_str() const { return value; } // Access valueint length() const { return strlen(value); } // Access lengthStringVar& operator= (const StringVar& rightObj);std::istream& operator>>…

Write a java class method named addQuotes that takes one parameter of type String. The method should return a string that's indentical to it's argument, but with a double quote character added at the beginning and end of the string.

A pet shop wants to give a discount to its clients if they buy one or more pets and at least four other items. The discount is equal to 15 percent of the cost of the other items, but not the pets. Implement a method: public static void discount (double[] prices, boolean[] isPet, int nItems) The method receives information about a particular sale. For the ith item, prices[i] is the price before any discount, and isPet[i] is true if the item is a pet. Wite a program that prompts a cashier to enter each price and then a y for a pet orn for another item. Use a price of -1 as a sentinel. Save the inputs in an array. Call the method that you implemented, and display the discount.

Write a method called flipMap() that takes in a map from string keys to string values, and returns a "reverse" or "inverse" version of...

Suppose that there will never be more than one character of pushback. Modifygetch and ungetch accordingly.

A palindrome is a string that reads the same forward and backward. For example,“deed” and “level” are palindromes. Write an algorithm in pseudocode that testswhether a string is a palindrome. Implement your algorithm as a static method inJava. The method should call itself recursively and determine if the string is apalindrome.Write a main method that reads a string from the user as input and pass it to thestatic method. You need to validate the string and make sure it contains only letters(no digits or special characters are allowed). The main method should displaywhether the string is a palindrome or not. a)  Read the string from the user and validate it.b)  Create a method that calls itself recursively and returns whether thestring is a palindrome or not.c)  Include a test table with at least the following test cases:1. Invalid input. For example, string contains a number or specialcharacter.2. A valid string that is a palindrome.3. A valid string that is not a palindrome.

Java language

The play method in the Player class of the craps game plays an entire game without interaction with the user. Revise the Player class so that its user can make individual rolls of the dice and view the results after each roll. The Player class no longer accumulates a list of rolls, but saves the string representation of each roll after it is made. Add new methods rollDice, getNumberOfRolls, isWinner, and isLoser to the Player class. The last three methods allow the user to obtain the number of rolls and to determine whether there is a winner or a loser. The last two methods are associated with new Boolean instance variables (winner and loser respectively). Two other instance variables track the number of rolls and the string representation of the most recent roll (rollsCount and roll). Another instance variable (atStartup) tracks whether or not the first roll has occurred. At instantiation, the roll, rollsCount, atStartup, winner, and loser variables are set to their appropriate…

⦁ Write a method called subMap that accepts two maps from strings to strings as its parameters and returns true if every key in the first map is also contained in the second map and maps to the same value in the second map. For example, {Smith=949–0504, Marty=206–9024} is a submap of {Marty=206–9024, Hawking=123–4567, Smith=949–0504, Newton=123–4567}. The empty map is a submap of every map.