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Card duplicates and use of full deck is detected

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This commit is contained in:
Ian Coleman
2016-11-16 11:46:25 +11:00
parent 02f05d3e46
commit 391c7f267f
2 changed files with 85 additions and 2 deletions
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src/js/index.js
+44 -1
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@@ -820,8 +820,9 @@
}
var bitsStr = getNumberOfEntropyBits(entropy);
var wordCount = Math.floor(entropy.binaryStr.length / 32) * 3;
var entropyTypeStr = getEntropyTypeStr(entropy);
DOM.entropyFiltered.html(entropy.cleanHtml);
DOM.entropyType.text(entropy.base.str);
DOM.entropyType.text(entropyTypeStr);
DOM.entropyStrength.text(strength);
DOM.entropyEventCount.text(entropy.base.ints.length);
DOM.entropyBits.text(bitsStr);
@@ -847,6 +848,48 @@
return bitsStr
}
function getEntropyTypeStr(entropy) {
var typeStr = entropy.base.str;
// Add some detail if these are cards
if (entropy.base.asInt == 52) {
var cardDetail = []; // array of message strings
// Detect duplicates
var dupes = [];
var dupeTracker = {};
for (var i=0; i<entropy.base.parts.length; i++) {
var card = entropy.base.parts[i];
if (card in dupeTracker) {
dupes.push(card);
}
dupeTracker[card] = true;
}
if (dupes.length > 0) {
var dupeWord = "duplicates";
if (dupes.length == 1) {
dupeWord = "duplicate";
}
var msg = dupes.length + " " + dupeWord + ": " + dupes.slice(0,3).join(" ");
if (dupes.length > 3) {
msg += "...";
}
cardDetail.push(msg);
}
// Detect full deck
var uniqueCards = [];
for (var uniqueCard in dupeTracker) {
uniqueCards.push(uniqueCard);
}
if (uniqueCards.length == 52) {
cardDetail.unshift("full deck");
}
// Add card details to typeStr
if (cardDetail.length > 0) {
typeStr += " (" + cardDetail.join(", ") + ")";
}
}
return typeStr;
}
// Depends on BigInteger
function factorial(n) {
if (n == 0) {