A simple program that I wrote in PHP to sort a series of numbers Heap 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>Heap 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>Heap 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 $e; ?>"size="5" maxlength="5"/><br/>
<br />
<input type="submit" value="Sort" name="bubble"/>
<input type="submit" value="Clear" name="clear" />
</form>
<?php
function build_heap(&$array, $i, $t){
$tmp_var = $array[$i];
$j = $i * 2 + 1;
while ($j <= $t) {
if($j < $t)
if($array[$j] < $array[$j + 1]) {
$j = $j + 1;
}
if($tmp_var < $array[$j]) {
$array[$i] = $array[$j];
$i = $j;
$j = 2 * $i + 1;
} else {
$j = $t + 1;
}
}
$array[$i] = $tmp_var;
}
function heap_sort(&$array) {
//This will heapify the array
$init = (int)floor((count($array) - 1) / 2);
// Thanks jimHuang for bug report
for($i=$init; $i >= 0; $i--){
$count = count($array) - 1;
build_heap($array, $i, $count);
}
//swaping of nodes
for ($i = (count($array) - 1); $i >= 1; $i--) {
$tmp_var = $array[0];
$array [0] = $array [$i];
$array [$i] = $tmp_var;
build_heap($array, 0, $i - 1);
}
}
if(isset($_POST['bubble']))
{
$arr = array($a,$b,$c,$d,$e);
$orig = implode(",", $arr);
$result = heap_sort($arr);
$final_sort = implode(",", $arr);
$display_original = "Original Values : " .$orig."<br><br>";
$process_results = "Sorted Values : " .$final_sort."<br>";
echo $display_original;
echo $process_results;
}
?>
</body>
</html>
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