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priyankashramapriyankashrama
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Merge pull request priyankashrama#6 from hendrahend/main
Create factorial.js
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‎factorial.js‎

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function factorial(n) {
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if (n < 0) return undefined;
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if (n === 0) return 1;
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return n * factorial(n - 1);
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}
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// Example
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console.log(factorial(5)); // 120
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console.log(factorial(0)); // 1

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