String simonPattern = "RRGBRYYBGY";
String userPattern = "RRGBBRYBGY";
int userScore = 0;
for (int i = 0; i < simonPattern.length(); i++) {
if (simonPattern.charAt(i) == userPattern.charAt(i)) {
userScore++;
} else {
break;
}
}
System.out.println("User score: " + userScore);