12. Trade Commissions

РЕШЕНИЕ С IF ELSE:

function tradeCommissions(input) {
    let town = input[0];
    let profit = Number(input[1]);
    let commission = 0;

    if (town === "Sofia") {
        if (profit > 0 && profit <= 500) {
            commission = 0.05;
        } else if (profit > 500 && profit <= 1000) {
            commission = 0.07;
        } else if (profit > 1000 && profit <= 10000) {
            commission = 0.08;
        } else if (profit > 10000) {
            commission = 0.12;
        }
    } else if (town === "Varna") {
        if (profit > 0 && profit <= 500) {
            commission = 0.045;
        } else if (profit > 500 && profit <= 1000) {
            commission = 0.075;
        } else if (profit > 1000 && profit <= 10000) {
            commission = 0.1;
        } else if (profit > 10000) {
            commission = 0.13;
        }
    } else if (town === "Plovdiv") {
        if (profit > 0 && profit <= 500) {
            commission = 0.055;
        } else if (profit > 500 && profit <= 1000) {
            commission = 0.08;
        } else if (profit > 1000 && profit <= 10000) {
            commission = 0.12;
        } else if (profit > 10000) {
            commission = 0.145;
        }
    }

    let sum = profit * commission;

    if (sum > 0) {
        console.log(sum.toFixed(2));
    } else {
        console.log("error");
    }
}

РЕШЕНИЕ СЪС SWITCH I IF ELSE:

function tradeCommissions(input) {
    let town = input[0];
    let profit = Number(input[1]);
    let commission = 0;

    switch (town) {
        case "Sofia":
            if (profit > 0 && profit <= 500) {
                commission = 0.05;
            } else if (profit > 500 && profit <= 1000) {
                commission = 0.07;
            } else if (profit > 1000 && profit <= 10000) {
                commission = 0.08;
            } else if (profit > 10000) {
                commission = 0.12;
            }
            break;

        case "Varna":
            if (profit > 0 && profit <= 500) {
                commission = 0.045;
            } else if (profit > 500 && profit <= 1000) {
                commission = 0.075;
            } else if (profit > 1000 && profit <= 10000) {
                commission = 0.1;
            } else if (profit > 10000) {
                commission = 0.13;
            }
            break;

        case "Plovdiv":
            if (profit > 0 && profit <= 500) {
                commission = 0.055;
            } else if (profit > 500 && profit <= 1000) {
                commission = 0.08;
            } else if (profit > 1000 && profit <= 10000) {
                commission = 0.12;
            } else if (profit > 10000) {
                commission = 0.145;
            }
            break;
    }

    let sum = profit * commission;

    if (sum > 0) {
        console.log(sum.toFixed(2));
    } else {
        console.log("error");
    }
}

РЕШЕНИЕ С IF ELSE И ТЕРНАРЕН ОПЕРАТОР:

function tradeCommissions(input) {
    let town = input[0];
    let sum = Number(input[1]);

    if (sum > 0 && sum <= 500) {
        sum *= town === "Sofia" ? 0.05 : town === "Varna" ? 0.045 : town === "Plovdiv" ? 0.055 : 0;
    } else if (sum > 500 && sum <= 1000) {
        sum *= town === "Sofia" ? 0.07 : town === "Varna" ? 0.075 : town === "Plovdiv" ? 0.08 : 0;
    } else if (sum > 1000 && sum <= 10000) {
        sum *= town === "Sofia" ? 0.08 : town === "Varna" ? 0.1 : town === "Plovdiv" ? 0.12 : 0;
    } else if (sum > 10000) {
        sum *= town === "Sofia" ? 0.12 : town === "Varna" ? 0.13 : town === "Plovdiv" ? 0.145 : 0;
    }
    console.log(sum > 0 ? sum.toFixed(2) : "error");
}

РЕШЕНИЕ С КОЛЕКЦИЯ И ТЕРНАРЕН ОПЕРАТОР:

function tradeCommissions(input) {
    let town = input[0];
    let profit = Number(input[1]);

    let commission = {
        "Sofia": profit > 0 && profit <= 500 ? 0.05 : profit > 500 && profit <= 1000 ? 0.07 : profit > 1000 && profit <= 10000 ? 0.08 : profit > 10000 ? 0.12 : 0,
        "Varna": profit > 0 && profit <= 500 ? 0.045 : profit > 500 && profit <= 1000 ? 0.075 : profit > 1000 && profit <= 10000 ? 0.1 : profit > 10000 ? 0.13 : 0,
        "Plovdiv": profit > 0 && profit <= 500 ? 0.055 : profit > 500 && profit <= 1000 ? 0.08 : profit > 1000 && profit <= 10000 ? 0.12 : profit > 10000 ? 0.145 : 0,
    };

    let sum = profit * (commission.hasOwnProperty(town) ? commission[town] : 0);

    console.log(sum > 0 ? sum.toFixed(2) : "error");
}

ИЛИ САМО С ТЕРНАРЕН ОПЕРАТОР:

function tradeCommissions(input) {
    let town = input[0];
    let sum = Number(input[1]);

    sum *= sum > 0 && sum <= 500 ? (town === "Sofia" ? 0.05 : town === "Varna" ? 0.045 : town === "Plovdiv" ? 0.055 : 0) :
           sum > 500 && sum <= 1000 ? (town === "Sofia" ? 0.07 : town === "Varna" ? 0.075 : town === "Plovdiv" ? 0.08 : 0) :
           sum > 1000 && sum <= 10000 ? (town === "Sofia" ? 0.08 : town === "Varna" ? 0.1 : town === "Plovdiv" ? 0.12 : 0) :
           sum > 10000 ? (town === "Sofia" ? 0.12 : town === "Varna" ? 0.13 : town === "Plovdiv" ? 0.145 : 0) : 0;

    console.log(sum > 0 ? sum.toFixed(2) : "error");
}