Added day 14

day14/part1.js

@@ -0,0 +1,46 @@
+var salt = "ihaygndm";
+
+var hashes = [];
+var toCheck = [];
+var checked = [];
+
+tripleChar = (str)=>(str.match(/(.)\1{2}/) ? (str.match(/(.)\1{2}/)[1]) : false);
+fiveChar = (str, char)=>(str.indexOf(char.repeat(5)) > -1);
+md5 = (str)=>{
+  var md5sum = require("crypto").createHash("md5");
+  md5sum.update(str);
+  return md5sum.digest("hex");
+}
+
+var i = 0;
+while(checked.length < 64){
+  var hash = md5(salt + i);
+  hashes.push(hash);
+  if(tripleChar(hash)){
+    toCheck.push({
+      i: i,
+      char: tripleChar(hash),
+      hash: hash
+    });
+  }
+
+  var toCheckNow = toCheck.filter((item)=>((item.i + 999) == i));
+  toCheck = toCheck.filter((item)=>((item.i + 1000) > i));
+
+  for(var item of toCheckNow){
+    var valid = false;
+    for(var x = item.i + 1; x < i; x++){
+      if(fiveChar(hashes[x], item.char)){
+        item.match = x;
+        item.matchHash = hashes[x];
+        valid = true;
+      }
+    }
+    if(valid){
+      console.log(checked.length + 1, item);
+      checked.push(item);
+    }
+  }
+
+  i++;
+}

day14/part2.js

@@ -0,0 +1,47 @@
+var salt = "ihaygndm";
+
+var hashes = [];
+var toCheck = [];
+var checked = [];
+
+tripleChar = (str)=>(str.match(/(.)\1{2}/) ? (str.match(/(.)\1{2}/)[1]) : false);
+fiveChar = (str, char)=>(str.indexOf(char.repeat(5)) > -1);
+md5 = (str)=>{
+  var md5sum = require("crypto").createHash("md5");
+  md5sum.update(str);
+  return md5sum.digest("hex");
+}
+md5repeat = (str, times)=>((times==0) ? (str) : (md5(md5repeat(str, times-1))));
+
+var i = 0;
+while(checked.length < 64){
+  var hash = md5repeat(salt + i, 2017);
+  hashes.push(hash);
+  if(tripleChar(hash)){
+    toCheck.push({
+      i: i,
+      char: tripleChar(hash),
+      hash: hash
+    });
+  }
+
+  var toCheckNow = toCheck.filter((item)=>((item.i + 999) == i));
+  toCheck = toCheck.filter((item)=>((item.i + 1000) > i));
+
+  for(var item of toCheckNow){
+    var valid = false;
+    for(var x = item.i + 1; x < i; x++){
+      if(fiveChar(hashes[x], item.char)){
+        item.match = x;
+        item.matchHash = hashes[x];
+        valid = true;
+      }
+    }
+    if(valid){
+      console.log(checked.length + 1, item);
+      checked.push(item);
+    }
+  }
+
+  i++;
+}