Exercise 2: Mastermind or Master Mind is a code-breaking game for two players. One player becomes the code-maker, the other the code-breaker. The game rules of your program: The code-maker is the application. And it chooses a pattern of four code Letters as a subset of the following 7 alphabetic letters (A, B, C, D, E, F, G). The code cannot include duplicates and blanks. The chosen pattern is hidden by GUI. The code-breaker tries to guess the pattern in the right order in both orders, within twelve turns. Each guess is made by placing a row of code patterns on the decoding board. Once placed, the program provides feedback after each row of guess. Character Y feedback is placed for each code patters from the guess, which is correct in both character and position. "X' feedback indicates the existence of a correct Character in the code but placed in the wrong position