A simple program that I wrote in PHP to sort a series of numbers Shell Sort algorithm.
If you have some questions please send me an email at jakerpomperada@gmail.comand jakerpomperada@yahoo.com.
If you have some questions please send me an email at jakerpomperada@gmail.comand jakerpomperada@yahoo.com.
My mobile number here in the Philippines is 09173084360.
Sample Program Output
Program Listing
<?php
error_reporting(0);
$a= $_POST['val_1'];
$b= $_POST['val_2'];
$c= $_POST['val_3'];
$d= $_POST['val_4'];
$e= $_POST['val_5'];
if(isset($_POST['clear']))
{
$a=""; $b=""; $c=""; $d=""; $e="";
$display_original=""; $process_results="";
}
?>
<html>
<head>
<title>Shell Sort in PHP</title>
<style>
body { font-family:arial;}
form { width: 400px; }
label { float: left; width: 95px; }
.clear { clear: both; height: 0; line-height: 0; }
.floatright { float: right; }
</style>
</head>
<body>
<h2>Shell Sort in PHP</h2>
<form action="" method="post">
<label>Value No. 1 : </label> <input type="text" name="val_1" value="<?php echo $a; ?>" size="5" maxlength="5" autofocus/><br/><br>
<label>Value No. 2 : </label> <input type="text" name="val_2" value="<?php echo $b; ?>" size="5" maxlength="5"/><br/><br>
<label>Value No. 3 : </label> <input type="text" name="val_3" value="<?php echo $c; ?>" size="5" maxlength="5"/><br/><br>
<label>Value No. 4 : </label> <input type="text" name="val_4" value="<?php echo $d; ?>"size="5" maxlength="5"/><br/><br>
<label>Value No. 5 : </label> <input type="text" name="val_5" value="<?php echo $e; ?>"size="5" maxlength="5"/><br/>
<br />
<input type="submit" value="Sort" name="bubble"/>
<input type="submit" value="Clear" name="clear" />
</form>
<?php
function shellsort(array $arr)
{
$n = sizeof($arr);
$t = ceil(log($n, 2));
$d[1] = 1;
for ($i = 2; $i <= $t; $i++) {
$d[$i] = 2 * $d[$i - 1] + 1;
}
$d = array_reverse($d);
foreach ($d as $curIncrement) {
for ($i = $curIncrement; $i < $n; $i++) {
$x = $arr[$i];
$j = $i - $curIncrement;
while ($j >= 0 && $x < $arr[$j]) {
$arr[$j + $curIncrement] = $arr[$j];
$j = $j - $curIncrement;
}
$arr[$j + $curIncrement] = $x;
}
}
return $arr;
}
if(isset($_POST['bubble']))
{
$arr = array($a,$b,$c,$d,$e);
$result = shellsort($arr);
$original_values = implode(",", $arr);
$withComma = implode(",", $result);
$display_original = "Original Values : " .$original_values."<br><br>";
$process_results = "Sorted Values : " .$withComma."<br>";
echo $display_original;
echo $process_results;
}
?>
</body>
</html>
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