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weatheredwatcher/collatz.html

Created March 31, 2010 14:30
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collatz.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd" >
<html lang = "en" >
<head>
<meta http - equiv = "Content-Type"content = "text/html; charset=utf-8" >
<title > Collatz Conjecture </title>
<meta name="generator" content="TextMate http:/ / macromates.com / ">
<meta name="author " content="weatheredwatcher ">
<!-- Date: 2010-03-07 -->
<script>
n = prompt("Enter a number greater than 1: ");
var counter = 0
function collatz(n, counter) {
document.display.myCounter.value=counter;
if (n>1) {
if (n%2) {
t = 3 * n + 1;
counter++;
collatz(t, counter);
} else{
t = n/2;
counter++;
collatz(t, counter);
};
};
return counter;
}
</script>
</head>
<body>
<div>
<form name="display">
<input type="text" name="myCounter" value="0" />
</form>
<script>
collatz(n, counter);
</script>
</div>
</body>
</html>
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