08.Cinema Ticket

function cinemaTicket(input) {
    let dayOfWeek = input[0];
    let price = 0;

    if (dayOfWeek === "Monday" || dayOfWeek === "Tuesday" || dayOfWeek === "Friday") {
        price = 12;
    } else if (dayOfWeek === "Wednesday" || dayOfWeek === "Thursday") {
        price = 14;
    } else {
        price = 16;
    }
    console.log(price);
}

Решение със switch:

function cinemaTicket(input){
    let day = input[0];
    let price = 0;

    switch (day){
        case "Monday":
        case "Tuesday":
        case "Friday":
            price = 12;
            break;
        case "Wednesday":
        case "Thursday":
            price = 14;
            break;
        case "Saturday":
        case "Sunday":
            price = 16;
            break;
    }
    console.log(price);
}

Pешение с тернарен оператор:)

function cinemaTicket(day) {
    console.log(day[0] == "Saturday" || day[0] == "Sunday"? 16 : day[0] == "Wednesday" || day[0] == "Thursday"? 14 : 12);
}