php
if ($_POST["perdata"] == "")
{
$_POST["perdata"] = "1 2 3 4";
}
$data = chop (trim ($_POST["perdata"]));
$a = explode (" ", $data);
sort ($a);
$data = implode (" ", $a);
?>
function nextpermu (&$c)
{
$s = sizeof ($c);
$i = $s - 1;
while ($i > 0)
{
if ($c[$i] > $c[$i-1])
{
$j = $s-1;
while ($c[$j]
$j--;
$t = $c[$i-1];
$c[$i-1] = $c[$j];
$c[$j] = $t;
//echo $i."-".$j."
";
for ($j=$s-1; $i
{
$t = $c[$i];
$c[$i] = $c[$j];
$c[$j] = $t;
}
return true;
}
$i--;
}
for ($i = 0, $j=$s-1; $i
{
$t = $c[$i];
$c[$i] = $c[$j];
$c[$j] = $t;
}
return false;
}
?>
当前元素： echo $data; ?>
| 序号 | 排列 |
|---|---|
| echo $num; ?> | echo implode (" ", $a); ?> |
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