testing/performance/talos/page_load_test/sunspider/access-fannkuch.html

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