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string-fasta.html (3507B)

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     27 
     28 <title>SunSpider string-fasta</title>
     29 
     30 </head>
     31 
     32 <body>
     33 <h3>string-fasta</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 //
     44 //  Contributed by Ian Osgood
     45 
     46 var last = 42, A = 3877, C = 29573, M = 139968;
     47 
     48 function rand(max) {
     49  last = (last * A + C) % M;
     50  return max * last / M;
     51 }
     52 
     53 var ALU =
     54  "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG" +
     55  "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA" +
     56  "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT" +
     57  "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA" +
     58  "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG" +
     59  "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC" +
     60  "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA";
     61 
     62 var IUB = {
     63  a:0.27, c:0.12, g:0.12, t:0.27,
     64  B:0.02, D:0.02, H:0.02, K:0.02,
     65  M:0.02, N:0.02, R:0.02, S:0.02,
     66  V:0.02, W:0.02, Y:0.02
     67 }
     68 
     69 var HomoSap = {
     70  a: 0.3029549426680,
     71  c: 0.1979883004921,
     72  g: 0.1975473066391,
     73  t: 0.3015094502008
     74 }
     75 
     76 function makeCumulative(table) {
     77  var last = null;
     78  for (var c in table) {
     79    if (last) table[c] += table[last];
     80    last = c;
     81  }
     82 }
     83 
     84 function fastaRepeat(n, seq) {
     85  var seqi = 0, lenOut = 60;
     86  while (n>0) {
     87    if (n<lenOut) lenOut = n;
     88    if (seqi + lenOut < seq.length) {
     89      ret = seq.substring(seqi, seqi+lenOut);
     90      seqi += lenOut;
     91    } else {
     92      var s = seq.substring(seqi);
     93      seqi = lenOut - s.length;
     94      ret = s + seq.substring(0, seqi);
     95    }
     96    n -= lenOut;
     97  }
     98 }
     99 
    100 function fastaRandom(n, table) {
    101  var line = new Array(60);
    102  makeCumulative(table);
    103  while (n>0) {
    104    if (n<line.length) line = new Array(n);
    105    for (var i=0; i<line.length; i++) {
    106      var r = rand(1);
    107      for (var c in table) {
    108        if (r < table[c]) {
    109          line[i] = c;
    110          break;
    111        }
    112      }
    113    }
    114    ret = line.join('');
    115    n -= line.length;
    116  }
    117 }
    118 
    119 var ret;
    120 
    121 var count = 7;
    122 ret = fastaRepeat(2*count*100000, ALU);
    123 ret = fastaRandom(3*count*1000, IUB);
    124 ret = fastaRandom(5*count*1000, HomoSap);
    125 
    126 
    127 
    128 var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
    129 
    130 document.getElementById("console").innerHTML = _sunSpiderInterval;
    131 </script>
    132 
    133 
    134 </body>
    135 </html>