#HTS realistic challenge 6 BY GEORGE SKOUROUPATHIS
#YOU NEED TO HAVE real6.txt and real6a.txt
openfile1 = open('C:\Python26/programs/real6/real6.txt','r+')
fileList = openfile1.readlines()
newList = range(len(fileList)/3)
index = 0
sum = 0
while index < len(fileList):
    sum += int(fileList[index])
    if (index + 1)%3 == 0:
        newList[(index + 1) / 3 - 1] = sum
        sum = 0
    index += 1
print "New List:", newList

#If you want to print the output to file real6a.txt:
#index2 = 0
#openfile2 = open('C:\Python26/programs/real6/real6a.txt','a')
#while index2 < len(newList):
#    openfile2.write(str(newList[index2]) + "\n")
#    index2 += 1


#Make dictionary1 which stores the encrypted keys
#and how many times show up in newList    
dictionary1 = {}

exist = 0
index3 = 0
while index3 < len(newList):
    if dictionary1.has_key(newList[index3]):
        exist = 1
    if exist == 0:
        dictionary1[newList[index3]] = 1
    else:
        dictionary1[newList[index3]] += 1
    exist = 0
    index3 += 1

#find the most used value
max_val = -1
max_key = ""
for k,v in dictionary1.iteritems():
    if v > max_val:
        max_val = v
        max_key = k
print max_key, ":", max_val

inputval = "aa"
uberNewList = []
testtext = ""
print "Type \"exit\", without the quotes to exit",
print "or..."

while inputval == "aa":
    inputval = raw_input("Type which letter do you think is the most used in this text? ")
    if inputval == "exit":
        break
    try:
        diffe = max_key - ord(inputval)
    except:
        print "Please enter only one character"
        inputval = "aa"
        continue
    print "diff = ", diffe
    index4 = 0
    while index4 < len(newList):
        try:
            uberNewList.append(chr(newList[index4] - diffe))
        except:
            print "Error occured"
            break
        testtext += uberNewList[index4]
        index4 += 1
    print "============== DECODED MESSAGE =============="
    print testtext
    print "=========== END OF DECODED MESSAGE ==========="
    del uberNewList[:]
    testtext = ""
    inputval = "aa"