Last active
May 6, 2019 16:53
-
-
Save mattdiamond/f7302472e0ce6eb0a50d65efaabaa7f2 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| function primeFactors (n) { | |
| if (n <= 1) return []; | |
| if (n % 2 === 0) { | |
| return [2, ...primeFactors(n / 2)]; | |
| } | |
| const root = Math.sqrt(n); | |
| let divisor = 3; | |
| while (n % divisor) { | |
| divisor += 2; | |
| if (divisor > root) { | |
| return [n]; | |
| } | |
| } | |
| return [divisor, ...primeFactors(n / divisor)]; | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment