<script>
function pyramid(n)
{ document.write("<pre>"); // outer loop to handle number
// of rows n in this case
for (let i = n; i >= 1; i--) {
// inner loop to create
// right triangle gaps on
// left side of pyramid
for (let gap = n - 1; gap >= i; gap--) { document.write(" "); }
// initializing value corresponding
// to 'A' ASCII value is 65
let num = 65;
// loop to print characters on
// left side of pyramid
for (let j = 1; j <= i; j++) { document.write(String.fromCharCode(num++)+" ");
}
// loop to print characters on
// right side of pyramid
for (let j = i - 1; j >= 0; j--) { document.write(String.fromCharCode(--num)+" ");
}
document.write("<br>"); }
document.write("</pre>");}
pyramid(9);
</script>
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