<html>
<head>
<title>pyramid</title>
<basefont size=50>
</head>
<body>
<script>
var a,b,c,d=5;
for(a=5;a>0;a--)
{
document.write("<br>");
for(b=0;b<a;b++)
{
document.write(" ");
}
for(c=5;c>a;c--)
{
document.write(c+" ");
}
for(;d<=5;d++)
{
document.write(d+" ");
}
d=a;
d--;
}
</script>
</body>
</html>
OUTPUT
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