Soal Soal Test Coding

## Function Factorial (JS)
function factorial(n){
    let answer = 1
    if(n == 0 || n == 1){
        return answer;
    }else{
        for(var i = n; i >= 1; i++){
            answer = answer - 1
        }
        return answer
    }
}

let n = 4;
answer = factorial(n)
console.log("Factorial dari " + n + "adalah" + answer)

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## Membulatkan angka desimal kebawah (JS)
var decimalDown = Math.floor(1.6)
console.log("Decimal down menjadi" + decimalDown)

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## Membulatkan angka desimal ke atas (JS)
var decimalUp = Math.round(1.7)
console.log("Decimal up menjadi" + decimalUp)

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## Membalik kata (JS)
const str = "Joko Purnomo"
const reverseWords = str => {
    let reversed = '';
    reversed = str.split(' ')
    .map(word => {
        return word
        .split("")
        .reverse()
        .join("");
    })
    .join(" ")
    return reversed
}

console.log("Membalik huruf" + reverseWords(str))

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// [PHP] Menghitung beberapa detik kedepan
$date = date_create('08:52:45');
$d = date_add($date, date_interval_create_from_date_string('5000 second'));
echo date_format($d, 'H:i:s') . "\n";

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// [PHP] Menghitung total pecahan uang yang berada di Array
function hitung($uang)
{

    $pecahan = [100000, 50000, 20000, 5000, 1000, 50];
    $pec = [];
    $a = $uang;
    for ($i = 0; $i <= 5; $i++) {
        $pec = $a % $pecahan[$i];
        $b = ($a - $pec) / $pecahan[$i];
        $a = $pec;

        echo "Pecahan ke " . $pecahan[$i] . " = " . $b . "\n";
    }
}
echo hitung(1895250) . "\n";

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