chrome/test/data/dromaeo/tests/sunspider-access-fannkuch.html

   1 <html>
   2 <head>
   3 <script src="../htmlrunner.js"></script>
   4 <script>
   5 /* The Great Computer Language Shootout
   6    http://shootout.alioth.debian.org/
   7    contributed by Isaac Gouy */
   8
   9 function fannkuch(n) {
  10    var check = 0;
  11    var perm = Array(n);
  12    var perm1 = Array(n);
  13    var count = Array(n);
  14    var maxPerm = Array(n);
  15    var maxFlipsCount = 0;
  16    var m = n - 1;
  17
  18    for (var i = 0; i < n; i++) perm1[i] = i;
  19    var r = n;
  20
  21    while (true) {
  22       // write-out the first 30 permutations
  23       if (check < 30){
  24          var s = "";
  25          for(var i=0; i<n; i++) s += (perm1[i]+1).toString();
  26          check++;
  27       }
  28
  29       while (r != 1) { count[r - 1] = r; r--; }
  30       if (!(perm1[0] == 0 || perm1[m] == m)) {
  31          for (var i = 0; i < n; i++) perm[i] = perm1[i];
  32
  33          var flipsCount = 0;
  34          var k;
  35
  36          while (!((k = perm[0]) == 0)) {
  37             var k2 = (k + 1) >> 1;
  38             for (var i = 0; i < k2; i++) {
  39                var temp = perm[i]; perm[i] = perm[k - i]; perm[k - i] = temp;
  40             }
  41             flipsCount++;
  42          }
  43
  44          if (flipsCount > maxFlipsCount) {
  45             maxFlipsCount = flipsCount;
  46             for (var i = 0; i < n; i++) maxPerm[i] = perm1[i];
  47          }
  48       }
  49
  50       while (true) {
  51          if (r == n) return maxFlipsCount;
  52          var perm0 = perm1[0];
  53          var i = 0;
  54          while (i < r) {
  55             var j = i + 1;
  56             perm1[i] = perm1[j];
  57             i = j;
  58          }
  59          perm1[r] = perm0;
  60
  61          count[r] = count[r] - 1;
  62          if (count[r] > 0) break;
  63          r++;
  64       }
  65    }
  66 }
  67
  68 window.onload = function(){ startTest("sunspider-access-fannkuch", '786198fd');
  69
  70 var ret;
  71
  72 test( "Pfannkuchen", function(){
  73         ret = fannkuch(7);
  74 });
  75
  76 endTest(); };
  77 </script>
  78 </head>
  79 <body></body>
  80 </html>