Initial data commit

Task/Entropy/Ring/entropy.ring

@@ -0,0 +1,32 @@
+decimals(8)
+entropy = 0
+countOfChar = list(255)
+
+source="1223334444"
+charCount  =len( source)
+usedChar  =""
+
+for i =1 to len( source)
+     ch =substr(source, i, 1)
+     if not(substr( usedChar, ch)) usedChar =usedChar +ch ok
+     j  =substr( usedChar, ch)
+    countOfChar[j] =countOfChar[j] +1
+next
+
+l =len(usedChar)
+for i =1 to l
+     probability =countOfChar[i] /charCount
+     entropy =entropy - (probability *logBase(probability, 2))
+next
+
+see "Characters used and the number of occurrences of each " + nl
+for i =1 to l
+      see "'" + substr(usedChar, i, 1) + "' " + countOfChar[i] + nl
+next
+
+see " Entropy of " + source + " is  " + entropy + " bits." + nl
+see " The result should be around 1.84644 bits." + nl
+
+func logBase (x, b)
+        logBase =log( x) /log( 2)
+        return logBase