From d32466d20399489ae5cf254588c87e009a9c29f7 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Sun, 23 Nov 2014 18:56:24 -0800
Subject: Add challenge 4

---
 src/utils/FrequencyMap.scala | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

(limited to 'src/utils/FrequencyMap.scala')

diff --git a/src/utils/FrequencyMap.scala b/src/utils/FrequencyMap.scala
index 0bea25c..fffdabe 100644
--- a/src/utils/FrequencyMap.scala
+++ b/src/utils/FrequencyMap.scala
@@ -1,6 +1,6 @@
 package ixee.cryptopals.utils
 
-import ConversionUtils.tup
+import FunctionUtils.tup
 
 class FrequencyMap(mapargs: Map[Char, Double]) {
   sealed trait DiffResult
@@ -14,7 +14,7 @@ class FrequencyMap(mapargs: Map[Char, Double]) {
     if (c.isLower)
       mappings.get(c)
     else                                    // TODO remove the bias here
-      mappings.get(c.toLower).map(_ * 0.002) // bias HARD against uppercase spam. should make this a per-map setting.
+      mappings.get(c.toLower).map(_ * 0.0002) // bias HARD against uppercase spam. should make this a per-map setting.
 
   def diff(other: FrequencyMap): Double = {
     // pseudoscience here
@@ -36,29 +36,30 @@ class FrequencyMap(mapargs: Map[Char, Double]) {
 
   // TODO: don't hardcode these..
   def diffAt(c: Char, charFreq: Double) =
-    c match {
-      case ' ' => 0
-      case '{' | '}' | '`' | '|' =>
+    Math.pow(c match {
+      case ' ' =>
+        squared(0.10 - charFreq)
+      case '{' | '}' | '`' | '|' | '^' =>
         squared(0.000001 - charFreq) // { } | and ` are very unlikely irl
       case '[' | ']' =>
-        squared(0.000002 - charFreq) // [ ] are more likely
-      case '"' | '\''=>
+        squared(0.0000015 - charFreq) // [ ] are more likely
+      case '"' | '\'' =>
         squared(0.00001 - charFreq) // " or ' are 100% unlikely 90% of the time
       case '~' | '+' | '=' | '<' | '>' | '/' | '\\' =>
-        squared(0.000004 - charFreq) // math is weird kids
+        squared(0.00000175 - charFreq) // math is weird kids
       case ';' | ':' | '-' | '*' | '(' | '&' | ')' | '_' =>
-        squared(0.000009 - charFreq) // getting into more common punctuation
+        squared(0.000003 - charFreq) // getting into more common punctuation
       case '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' =>
-        squared(0.00001 - charFreq) // numbers are KINDA uncommon
+        squared(0.000002 - charFreq) // numbers are KINDA uncommon
       case '$' | '%' | '#' | '@' | '!' =>
-        squared(0.00003 - charFreq) // more punctuation...
+        squared(0.00002 - charFreq) // more punctuation...
       case '.' | ',' =>
         squared(0.00007 - charFreq) // and the last of the punctuations
       case '\n' | '\r' =>
-        squared(0.0000002 - charFreq) // explicit \r \n is rare in freeform text.
+        squared(0.000001 - charFreq) // explicit \r \n is rare in freeform text.
       case _ =>
-        this.at(c).map(_ - charFreq).map(squared).getOrElse(0.0)
-    }
+        this.at(c).map(_ - charFreq).map(squared).getOrElse(0.4)
+    }, 0.5)
 
   def squared(x: Double) = x * x
 
-- 
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