Permutation Calculator
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// Helper Function, generates factorials
function fact(num) {
var rval = 1;
for (var i = 2; i <= num; i++)
rval = rval * i;
return rval;
}
// Calculates number of possible permutations from set n, of length k
function permutations(n, k) {
var p = fact(n);
var v = fact(n-k);
return p/v;
}
console.log(
permutations(52, 52)
);
JavaScript
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