https://stackoverflow.com/questions/17994347
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Russian$size = 32;
$pascal = array(
array(1),
);
for ($i = 1; $i <= $size; ++$i) {
$prevCount = count($pascal[$i-1]);
for ($j = 0; $j <= $prevCount; ++$j) {
$pascal[$i][$j] = (
(isset($pascal[$i-1][$j-1]) ? $pascal[$i-1][$j-1] : 0) +
(isset($pascal[$i-1][$j]) ? $pascal[$i-1][$j] : 0)
);
}
}
var_dump($pascal);
Pascal's triangle series in php [closed]
-
04-06-2022 - |
سؤال
I am trying to get pascal's triangle using two dimensional array. But it not works. can anyone solve this program. Thanks in advance.
<html>
<body>
<div>
<form name="form1" action="pascaltriangle4.php" method="post">
Enter the number of rows in pyramid of stars you wish to see : <input type="text" name="n">
<input type="submit" name="submit" value="submit">
</form>
</div>
<div>
<table>
<?php
if($_POST['submit']==='submit')
{
ini_set('display_errors', 1);
error_reporting(E_ALL);
$n=$_POST['n'];
$arr=array();
//print_r($arr);
for($i=0;$i<=$n;$i++)
{
echo "<tr>";
for($j=0;$j<=$i;$j++)
{
if($j==0)
{
//echo "1";
$arr[$i][$j]=1;
//print_r($arr);
if($n!=$i)
{
echo "<td colspan='".($n-$i)."'></td>";
}
echo "<td>".$arr[$i][$j]."</td>";
echo "<td></td>";
}
elseif($i==$j)
{
//echo "1";
$arr[$i][$j]=1;
//echo $arr;
echo "<td>".$arr[$i][$j]."</td>";
//echo "<td></td>";
}
else
{
$arr[$i][$j]=$arr[$i-1][$j-1]+$arr[$i-1][$j];
echo "<td>".$arr[$i][$j]."</td>";
echo "<td></td>";
}
}echo "</tr>";
}
//echo "<pre>";
//print_r($arr);
//echo "</pre>";
}
?>
</table></div>
<body>
</body>
</html>
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