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Commit 3648eb7

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Merge pull request vJechsmayr#106 from dhkamp/feature/factorial

Added factorial algorithm

2 parents b596741 + e45b922 commit 3648eb7Copy full SHA for 3648eb7

1 file changed

DynamicProgramming
- factorial.js

`‎DynamicProgramming/factorial.js‎`

-Original file line number
+Diff line change
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 +function factorial(num = 0) {
 +  if (num < 0)
 +    throw new Error(
 +      "Factorials can only be calculated for non-negative numbers."
 +    );
 +  if (num === 0 || num === 1) return 1;
++
 +  let value = 1;
++
 +  for (let i = 0, j = num; i < j; i++) {
 +    value *= i + 1;
 +  }
 +  return value;
 +}
++
 +console.log(factorial(3)); // 3! = 1*2*3 = 6

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