《Code Complete》ch.18 表驱动法

// get the full name of weekday

// good
String[] weekdays = { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

String getName(int day) {
    return weekdays[day];
}

// bad
String getName(int day) {
    switch (day) {
        case 0:
            return "Sunday";
            break;
        case 1:
            return "Monday";
            break;
        // and so on
    }
}