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Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
12433 changed files with 156208 additions and 123 deletions
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29
Task/Catalan-numbers/JavaScript/catalan-numbers-1.js Normal file
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<html><head><title>Catalan</title></head>
<body><pre id='x'></pre><script type="application/javascript">
function disp(x) {
var e = document.createTextNode(x + '\n');
document.getElementById('x').appendChild(e);
}
var fc = [], c2 = [], c3 = [];
function fact(n) { return fc[n] ? fc[n] : fc[n] = (n ? n * fact(n - 1) : 1); }
function cata1(n) { return Math.floor(fact(2 * n) / fact(n + 1) / fact(n) + .5); }
function cata2(n) {
if (n == 0) return 1;
if (!c2[n]) {
var s = 0;
for (var i = 0; i < n; i++) s += cata2(i) * cata2(n - i - 1);
c2[n] = s;
}
return c2[n];
}
function cata3(n) {
if (n == 0) return 1;
return c3[n] ? c3[n] : c3[n] = (4 * n - 2) * cata3(n - 1) / (n + 1);
}
disp(" meth1 meth2 meth3");
for (var i = 0; i <= 15; i++)
disp(i + '\t' + cata1(i) + '\t' + cata2(i) + '\t' + cata3(i));
</script></body></html>

17
Task/Catalan-numbers/JavaScript/catalan-numbers-2.js Normal file
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meth1 meth2 meth3
0 1 1 1
1 1 1 1
2 2 2 2
3 5 5 5
4 14 14 14
5 42 42 42
6 132 132 132
7 429 429 429
8 1430 1430 1430
9 4862 4862 4862
10 16796 16796 16796
11 58786 58786 58786
12 208012 208012 208012
13 742900 742900 742900
14 2674440 2674440 2674440
15 9694845 9694845 9694845