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20 lines
510 B
JavaScript
20 lines
510 B
JavaScript
/*
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author: Theepag
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*/
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const factorialize = (num) => {
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// Step 1. variable result to store num
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let result = num;
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// If num = 0 OR 1, the factorial will return 1
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if (num === 0 || num === 1)
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return 1;
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// Step 2. WHILE loop
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while (num > 1) {
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num--; // decrement 1 at each iteration
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result = result * num; // or result = result * num;
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}
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// Step 3. Return the factorial
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return result;
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}
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//test
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console.log(factorialize(5));
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console.log(factorialize(4)); |