Bulls and Cows

Bulls And Cows game is based on Artificial Intelligent. Here Computer Guess a 4 Digit Number where all digits are different and player have to find it out. When player guess a number and if he get same digit position as computer generated number has then Bulls will plus 1 or if the digit is present in the number then Cows will plus 1. For an example. Let Computer Generated Number is 4052 and player guess 4250 then Bulls will be 2 and Cows will be 2 because digit 4 and 5 are at correct position and 0 and 2 are present in number. Each time you have 6 moves to guess a number.