12 lines
247 B
JavaScript
12 lines
247 B
JavaScript
function factorial(n) {
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//check our edge case
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if (n < 0) { throw "Number must be non-negative"; }
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var result = 1;
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//we skip zero and one since both are 1 and are identity
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while (n > 1) {
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result *= n;
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n--;
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}
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return result;
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}
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