Contoh soal logika algoritma PHP

jawaban.php

<?php
// Soal: http://4.bp.blogspot.com/-LoQbNsgHIG0/VnZZvt-uRUI/AAAAAAAABOs/cpk594HiYC8/s400/contoh%2Bsoal%2Blogika%2Bphp.png
// jawaban https://www.facebook.com/ihvan.design
$totalUang = 1575250;
$pecahan = [
	['pecahan' => 100000,
	'jumlah' => 0,],
	['pecahan' => 50000,
	'jumlah' => 0,],
	['pecahan' => 20000,
	'jumlah' => 0,],
	['pecahan' => 5000,
	'jumlah' => 0,],
	['pecahan' => 100,
	'jumlah' => 0,],
	['pecahan' => 50,
	'jumlah' => 0,]
];

$key = 0;
while ($totalUang > 0) {
	if ($totalUang - $pecahan[$key]['pecahan'] < 0) {
		$key++;
	}else{
		$totalUang -= $pecahan[$key]['pecahan'];
		$pecahan[$key]['jumlah']++;
	}
}

foreach ($pecahan as $key => $value) {
	echo "Jumlah " . $value['pecahan']. ":" . $value['jumlah'] . "<br>";
}

?>

<hr/>
<?php
// jawaban https://www.facebook.com/lindi.classic
$JumlahUang = 1575250;

$Modulo1 		= $JumlahUang % 100000;
$SeratusRibu 	= $JumlahUang - $Modulo1;
$a = $SeratusRibu / 100000;

$Modulo2 		= $Modulo1 % 50000;
$LimaPuluhRibu 	= $Modulo1 - $Modulo2;
$b = $LimaPuluhRibu / 50000;

$Modulo3 		= $Modulo2 % 20000;
$DuaPuluhRibu 	= $Modulo2 - $Modulo3;
$c = $DuaPuluhRibu / 20000;

$Modulo4 		= $Modulo3 % 5000;
$LimaRibu 		= $Modulo3 - $Modulo4;
$d = $LimaRibu / 5000;

$Modulo5 		= $Modulo4 % 100;
$Seratus 		= $Modulo4 - $Modulo5;
$e = $Seratus / 100;

$Modulo6 		= $Modulo5 % 50;
$LimaPuluh 		= $Modulo5 - $Modulo6;
$f = $LimaPuluh / 50;

echo "Jumlah Rp. 100.000 : ".$a. "<br />";
echo "Jumlah Rp. 50.000 : ".$b. "<br />";
echo "Jumlah Rp. 20.000 : ".$c. "<br />";
echo "Jumlah Rp. 5.000 : ".$d. "<br />";
echo "Jumlah Rp. 100 : ".$e. "<br />";
echo "Jumlah Rp. 50 : ".$f. "<br />";
?>
<hr/>
<?php
//https://www.facebook.com/ihvan.design
$totalUang 	= 1575250;
$pecahan 	= [100000,50000,20000,5000,100,50];

foreach ($pecahan as $pecah) {
	echo "Jumlah uang " . $pecah . ":" . floor($totalUang / $pecah) . "<br>";
	$totalUang %= $pecah;
}
?>