11. Fruit Shop

function fruitShop(input) {
    let fruit = input[0];
    let day = input[1];
    let quantity = Number(input[2]);
    let price = 0;

    if (day === "Monday" || day === "Tuesday" || day === "Wednesday" || day === "Thursday" || day === "Friday") {
      if (fruit === "banana") {
        price = 2.50;
      } else if (fruit === "apple") {
        price = 1.20;
      } else if (fruit === "orange") {
        price = 0.85;
      } else if (fruit === "grapefruit") {
        price = 1.45;
      } else if (fruit === "kiwi") {
        price = 2.70;
      } else if (fruit === "pineapple") {
        price = 5.50;
      } else if (fruit === "grapes") {
        price = 3.85;
      }
    } else if (day === "Saturday" || day === "Sunday") {
      if (fruit === "banana") {
        price = 2.70;
      } else if (fruit === "apple") {
        price = 1.25;
      } else if (fruit === "orange") {
        price = 0.90;
      } else if (fruit === "grapefruit") {
        price = 1.60;
      } else if (fruit === "kiwi") {
        price = 3.00;
      } else if (fruit === "pineapple") {
        price = 5.60;
      } else if (fruit === "grapes") {
        price = 4.20;
      }
    }
    if (price === 0) {
      console.log("error");
    } else {
      console.log((price * quantity).toFixed(2));
    }
  }

РЕШЕНИЕ СЪС SWITCH И ТЕРНАРЕН ОПЕРАТОР:

function fruitShop(input) {
    let fruit = (input[0]);
    let day = (input[1]);
    let quantity = Number(input[2]);
    let price = 0;

    switch (day) {
        case "Monday":
        case "Tuesday":
        case "Wednesday":
        case "Thursday":
        case "Friday":
            price = fruit === "banana" ? 2.50 :
                    fruit === "apple" ? 1.20 :
                    fruit === "orange" ? 0.85 :
                    fruit === "grapefruit" ? 1.45 :
                    fruit === "kiwi" ? 2.70 :
                    fruit === "pineapple" ? 5.50 :
                    fruit === "grapes" ? 3.85 : 0;
            break;

        case "Saturday":
        case "Sunday":
            price = fruit === "banana" ? 2.70 :
                    fruit === "apple" ? 1.25 :
                    fruit === "orange" ? 0.90 :
                    fruit === "grapefruit" ? 1.60 :
                    fruit === "kiwi" ? 3.00 :
                    fruit === "pineapple" ? 5.60 :
                    fruit === "grapes" ? 4.20 : 0;
            break;
    }
    console.log(price === 0 ? "error" : (price * quantity).toFixed(2));
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

function fruitShop(input) {
    let fruit = (input[0]);
    let day = (input[1]);
    let quantity = Number(input[2]);

    let price = (day === "Monday" ||
                 day === "Tuesday" ||
                 day === "Wednesday" ||
                 day === "Thursday" ||
                 day === "Friday") ? (fruit === "banana" ? 2.50 :
                                      fruit === "apple" ? 1.20 :
                                      fruit === "orange" ? 0.85 :
                                      fruit === "grapefruit" ? 1.45 :
                                      fruit === "kiwi" ? 2.70 :
                                      fruit === "pineapple" ? 5.50 :
                                      fruit === "grapes" ? 3.85 : 0) :
                (day === "Saturday" ||
                 day === "Sunday") ? (fruit === "banana" ? 2.70 :
                                      fruit === "apple" ? 1.25 :
                                      fruit === "orange" ? 0.90 :
                                      fruit === "grapefruit" ? 1.60 :
                                      fruit === "kiwi" ? 3.00 :
                                      fruit === "pineapple" ? 5.60 :
                                       fruit === "grapes" ? 4.20 : 0) : 0;


    console.log(price === 0 ? "error" : (price * quantity).toFixed(2));
}

РЕШЕНИЯ С КОЛЕКЦИЯ И ТЕРНАРЕН ОПЕРАТОР:

function fruitShop(input) {
    let fruit = input[0];
    let day = input[1];
    let quantity = Number(input[2]);
    let price = 0;

    if (["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"].includes(day)) {
        price = fruit === "banana" ? 2.50 :
                fruit === "apple" ? 1.20 :
                fruit === "orange" ? 0.85 :
                fruit === "grapefruit" ? 1.45 :
                fruit === "kiwi" ? 2.70 :
                fruit === "pineapple" ? 5.50 :
                fruit === "grapes" ? 3.85 : 0;

    } else if (["Saturday", "Sunday"].includes(day)) {
        price = fruit === "banana" ? 2.70 :
                fruit === "apple" ? 1.25 :
                fruit === "orange" ? 0.90 :
                fruit === "grapefruit" ? 1.60 :
                fruit === "kiwi" ? 3.00 :
                fruit === "pineapple" ? 5.60 :
                fruit === "grapes" ? 4.20 : 0;
    }
    console.log(price === 0 ? "error" : (price * quantity).toFixed(2));
}

ИЛИ:

function fruitShop(input) {
    let fruit = input[0];
    let day = input[1];
    let quantity = Number(input[2]);
    let price = 0;

    if (["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"].includes(day)) {
        let weekdayPrice = { banana: 2.50, apple: 1.20, orange: 0.85, grapefruit: 1.45, kiwi: 2.70, pineapple: 5.5, grapes: 3.85 };
        if (weekdayPrice.hasOwnProperty(fruit)) {
            price = weekdayPrice[fruit];
        }
    } else if (["Saturday", "Sunday"].includes(day)) {
        let weekendPrice = { banana: 2.70, apple: 1.25, orange: 0.90, grapefruit: 1.60, kiwi: 3.00, pineapple: 5.60, grapes: 4.20 };
        if (weekendPrice.hasOwnProperty(fruit)) {
            price = weekendPrice[fruit];
        }
    }
    console.log(price === 0 ? "error" : (price * quantity).toFixed(2));
}