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The Tor Browser
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access-fannkuch.html (3210B)


      1 <!DOCTYPE html>
      2 <head>
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      4 Copyright (C) 2007 Apple Inc.  All rights reserved.
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     26 -->
     27 
     28 <title>SunSpider access-fannkuch</title>
     29 
     30 </head>
     31 
     32 <body>
     33 <h3>access-fannkuch</h3>
     34 <div id="console">
     35 </div>
     36 
     37 <script>
     38 
     39 var _sunSpiderStartDate = new Date();
     40 
     41 /* The Great Computer Language Shootout
     42   http://shootout.alioth.debian.org/
     43   contributed by Isaac Gouy */
     44 
     45 function fannkuch(n) {
     46   var check = 0;
     47   var perm = Array(n);
     48   var perm1 = Array(n);
     49   var count = Array(n);
     50   var maxPerm = Array(n);
     51   var maxFlipsCount = 0;
     52   var m = n - 1;
     53 
     54   for (var i = 0; i < n; i++) perm1[i] = i;
     55   var r = n;
     56 
     57   while (true) {
     58      // write-out the first 30 permutations
     59      if (check < 30){
     60         var s = "";
     61         for(var i=0; i<n; i++) s += (perm1[i]+1).toString();
     62         check++;
     63      }
     64 
     65      while (r != 1) { count[r - 1] = r; r--; }
     66      if (!(perm1[0] == 0 || perm1[m] == m)) {
     67         for (var i = 0; i < n; i++) perm[i] = perm1[i];
     68 
     69         var flipsCount = 0;
     70         var k;
     71 
     72         while (!((k = perm[0]) == 0)) {
     73            var k2 = (k + 1) >> 1;
     74            for (var i = 0; i < k2; i++) {
     75               var temp = perm[i]; perm[i] = perm[k - i]; perm[k - i] = temp;
     76            }
     77            flipsCount++;
     78         }
     79 
     80         if (flipsCount > maxFlipsCount) {
     81            maxFlipsCount = flipsCount;
     82            for (var i = 0; i < n; i++) maxPerm[i] = perm1[i];
     83         }
     84      }
     85 
     86      while (true) {
     87         if (r == n) return maxFlipsCount;
     88         var perm0 = perm1[0];
     89         var i = 0;
     90         while (i < r) {
     91            var j = i + 1;
     92            perm1[i] = perm1[j];
     93            i = j;
     94         }
     95         perm1[r] = perm0;
     96 
     97         count[r] = count[r] - 1;
     98         if (count[r] > 0) break;
     99         r++;
    100      }
    101   }
    102 }
    103 
    104 var n = 8;
    105 var ret = fannkuch(n);
    106 
    107 
    108 
    109 var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
    110 
    111 document.getElementById("console").innerHTML = _sunSpiderInterval;
    112 </script>
    113 
    114 
    115 </body>
    116 </html>