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| 1 | <html> | |
| 2 | <head> | |
| 3 | <script type="text/javascript"> | |
| 4 | /* | |
| 5 | Original Python version http://pastebin.com/qgEnH9HE | |
| 6 | JavaScript by pumpy | |
| 7 | */ | |
| 8 | var primes = []; | |
| 9 | var m = [1, 3, 7, 9]; | |
| 10 | ||
| 11 | function prime(n){
| |
| 12 | for (var i = 0; i < primes.length; i++) | |
| 13 | if ((primes[i] <= Math.round(Math.sqrt(n)) + 1) && (n % primes[i] == 0)) | |
| 14 | return false; | |
| 15 | return true; | |
| 16 | } | |
| 17 | ||
| 18 | function run(){
| |
| 19 | var i = 2, d = 1; | |
| 20 | while (primes.length < 10000) {
| |
| 21 | while (i < 10){
| |
| 22 | if (prime(i)) | |
| 23 | primes.push(i); | |
| 24 | i++; | |
| 25 | } | |
| 26 | for (var n = 0; n<4; n++){
| |
| 27 | i = d * 10 + m[n]; | |
| 28 | if (prime(i)) | |
| 29 | primes.push(i); | |
| 30 | } | |
| 31 | d++; | |
| 32 | } | |
| 33 | } | |
| 34 | ||
| 35 | console.log("Working ...");
| |
| 36 | var start = Date.now(); | |
| 37 | run(); | |
| 38 | var stop = Date.now(); | |
| 39 | console.log("Done!");
| |
| 40 | console.log(primes); | |
| 41 | ||
| 42 | var message = "It took:" + parseFloat(stop - start) + "ms to find 10.000 primes."; | |
| 43 | console.log(message); | |
| 44 | alert(message); | |
| 45 | </script> | |
| 46 | </head><body></body> | |
| 47 | </html> |
