05. Coins

function coins(input) {
    let change = parseInt(Number(input[0]) * 100);
    let coinCounter = 0;

    while (change !== 0) {
        if (change >= 200) {
            change -= 200;
        } else if (change >= 100) {
            change -= 100;
        } else if (change >= 50) {
            change -= 50;
        } else if (change >= 20) {
            change -= 20;
        } else if (change >= 10) {
            change -= 10;
        } else if (change >= 5) {
            change -= 5;
        } else if (change >= 2) {
            change -= 2;
        } else {
            change--;
        }
        coinCounter++;
    }
    console.log(coinCounter);
}

РЕШЕНИЕ С ТЕРНАРЕН ОПЕРАТОР:

function coins(input) {
    let change = parseInt(Number(input[0]) * 100);
    let coinCounter = 0;

    while (change !== 0) {

        change -= change >= 200 ? 200
                : change >= 100 ? 100
                : change >= 50 ? 50
                : change >= 20 ? 20
                : change >= 10 ? 10
                : change >= 5 ? 5
                : change >= 2 ? 2 : 1;

        coinCounter++;
    }
    console.log(coinCounter);
}

РЕШЕНИЕ С МАСИВ:

function coins(input) {
    let change = parseInt(Number(input[0]) * 100);
    let coins = [200, 100, 50, 20, 10, 5, 2, 1];
    let coinCounter = 0;

    for (let i = 0; i < coins.length; i++) {
        if (change >= coins[i]) {
            coinCounter += parseInt(change / coins[i]);
            change %= coins[i];
        }
    }
    console.log(coinCounter);
}

Pешение със forEach():

function coins(input) {
    let change = parseInt(Number(input) * 100);
    let coinCounter = 0;

    [200, 100, 50, 20, 10, 5, 2, 1].forEach(coin => {
        coinCounter += parseInt(change / coin);
        change %= coin;
    });

    console.log(coinCounter);
}