var deck, deckSize, l, log2, plot, rand, results, swap, test, testCount;

deckSize = 52;

deck = (function() {
  results = [];
  for (var l = 0; 0 <= deckSize ? l < deckSize : l > deckSize; 0 <= deckSize ? l++ : l--){ results.push(l); }
  return results;
}).apply(this);

rand = function(min, max) {
  if (min == null) {
    min = 0;
  }
  if (max == null) {
    max = deckSize;
  }
  return Math.floor(Math.random() * (max - min)) + min;
};

swap = function(a, b) {
  var ref;
  return ref = [deck[b], deck[a]], deck[a] = ref[0], deck[b] = ref[1], ref;
};

testCount = 10000;

log2 = function(x) {
  return Math.log(x) / Math.LN2;
};

test = function() {
  return plot((function() {
    var i, n, o, p, ref, ref1, results1, results2;
    results1 = [];
    for (n = 1, ref = testCount; 1 <= ref ? n <= ref : n >= ref; 1 <= ref ? n++ : n--) {
      deck = (function() {
        results2 = [];
        for (var o = 0; 0 <= deckSize ? o < deckSize : o > deckSize; 0 <= deckSize ? o++ : o--){ results2.push(o); }
        return results2;
      }).apply(this);
      shuffle();
      for (i = p = 0, ref1 = deckSize; 0 <= ref1 ? p < ref1 : p > ref1; i = 0 <= ref1 ? ++p : --p) {
        if (deck.indexOf(i) === -1) {
          throw i + " is not in the deck";
        }
        if (deck.length !== deckSize) {
          throw "deck length is " + deck.length + "; should be " + deckSize;
        }
      }
      results1.push(deck);
    }
    return results1;
  })());
};

plot = function(runs) {
  var card, i, index, j, k, len, len1, maxValue, n, o, p, proportion, q, ref, ref1, results1, row, run, table, v, values;
  table = $('<table>').appendTo('body');
  row = $('<tr>').appendTo(table);
  for (k = n = 0, ref = deckSize; 0 <= ref ? n < ref : n > ref; k = 0 <= ref ? ++n : --n) {
    row.append("<th>" + k + "</th>");
  }
  values = (function() {
    var o, ref1, results1;
    results1 = [];
    for (o = 0, ref1 = deckSize; 0 <= ref1 ? o < ref1 : o > ref1; 0 <= ref1 ? o++ : o--) {
      results1.push((function() {
        var p, ref2, results2;
        results2 = [];
        for (p = 0, ref2 = deckSize; 0 <= ref2 ? p < ref2 : p > ref2; 0 <= ref2 ? p++ : p--) {
          results2.push(0);
        }
        return results2;
      })());
    }
    return results1;
  })();
  maxValue = values.reduce(function(m, arr) {
    return Math.max(m, Math.max.apply(null, arr));
  }, 0);
  proportion = 255 / maxValue;
  for (o = 0, len = runs.length; o < len; o++) {
    run = runs[o];
    for (index = p = 0, len1 = run.length; p < len1; index = ++p) {
      card = run[index];
      values[card][index]++;
    }
  }
  results1 = [];
  for (i = q = 0, ref1 = deckSize; 0 <= ref1 ? q < ref1 : q > ref1; i = 0 <= ref1 ? ++q : --q) {
    row = $('<tr>').appendTo(table);
    row.append("<th>" + i + "</th>");
    results1.push((function() {
      var len2, r, ref2, results2;
      ref2 = values[i];
      results2 = [];
      for (r = 0, len2 = ref2.length; r < len2; r++) {
        v = ref2[r];
        j = v * proportion;
        results2.push(row.append("<td style='background-color:rgb(" + j + "," + j + "," + j + ");'>&nbsp;</td>"));
      }
      return results2;
    })());
  }
  return results1;
};

// ---
// generated by coffee-script 1.9.2