Read the guideline before start
- computer randomly generates a number of 4 different digits
- player enters a number of 4 different digits too
- computer compares given numbers and shows a result of 'bulls' and 'cows'
bull- guessed digit is on its place (index)cow- guessed digit exists in the number but the place (index) is wrong
Computer makes 1234, user prints 1345. The result is one bull (guessed
digit 1 is on it's place) and 2 cows (digits 3 and 4 are present but on
wrong places).
npm run play - run game