09. Ski Trip

РЕШЕНИЕ С IF-ELSE:

function skiTrip(input) {

    let night = Number(input[0]) - 1;
    let room = input[1];
    let rating = input[2];
    let priceForRoom = 18;
    let priceForApartment = 25;
    let priceForPresidentApartment = 35;
    let totalSum = 0;

    if (room == "room for one person") {
        totalSum = priceForRoom * night;
    } else if (room == "apartment") {
        totalSum = priceForApartment * night;

        if (night < 10) {
            totalSum *= 0.70;
        } else if (night >= 10 && night < 15) {
            totalSum *= 0.65;
        } else if (night >= 15) {
            totalSum *= 0.5;
        }
    } else if (room == "president apartment") {
        totalSum = priceForPresidentApartment * night;

        if (night < 10) {
            totalSum *= 0.90;
        } else if (night >= 10 && night < 15) {
            totalSum *= 0.85;
        } else if (night >= 15) {
            totalSum *= 0.80;
        }
    }

    if (rating == "positive") {
        totalSum *= 1.25;
    } else if (rating == "negative") {
        totalSum *= 0.90;
    }
    console.log(`${totalSum.toFixed(2)}`);
}


РЕШЕНИЕ СЪС SWITCH I IF-ELSE:

function skiTrip(input) {

    let night = Number(input[0]) - 1;
    let room = input[1];
    let rating = input[2];
    let priceForRoom = 18;
    let priceForApartment = 25;
    let priceForPresidentApartment = 35;
    let totalSum = 0;

    switch (room){
        case "room for one person":
            totalSum = priceForRoom * night;
            break;

    case "apartment":
        totalSum = priceForApartment * night;
        if (night < 10) {
            totalSum *= 0.70;
        } else if (night >= 10 && night < 15) {
            totalSum *= 0.65;
        } else if (night >= 15) {
            totalSum *= 0.5;
        }
        break;

    case "president apartment":
        totalSum = priceForPresidentApartment * night;
        if (night < 10) {
            totalSum *= 0.90;
        } else if (night >= 10 && night < 15) {
            totalSum *= 0.85;
        } else if (night >= 15) {
            totalSum *= 0.80;
        }
        break;
    }

    if (rating == "positive") {
        totalSum *= 1.25;
    } else if (rating == "negative") {
        totalSum *= 0.90;
    }
    console.log(`${totalSum.toFixed(2)}`);
}


РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

function skiTrip(input) {
    let night = Number(input[0]) - 1;
    let room = input[1];
    let rating = input[2];

    let totalSum = ((room == "room for one person" ? 18 :
        room == "apartment" ? (25 * (night < 10 ? 0.7 : night >= 15 ? 0.5 : 0.65)) :
            (35 * (night < 10 ? 0.9 : night >= 15 ? 0.8 : 0.85))) * night) * (rating == "positive" ? 1.25 : 0.9);

    console.log(`${totalSum.toFixed(2)}`);
}


ИЛИ ТАРИКАТСКАТА:)

function skiTrip(input) {

    let night = Number(input[0]) - 1;

    console.log(`${(((input[1] == "room for one person" ? 18 :
        input[1] == "apartment" ? (25 * (night < 10 ? 0.7 : night >= 15 ? 0.5 : 0.65)) :
        (35 * (night < 10 ? 0.9 : night >= 15 ? 0.8 : 0.85))) * night) * (input[2] == "positive" ? 1.25 : 0.9)).toFixed(2)}`);
}