TP4 AP IUT INFO ORS 2014

tp4.py

import math
import itertools
key="nbvcxwmlkjhgfdsqpoiuy treza"


def indiceLettre(t, l):
    if l not in t:
        return -1
    for i in range(len(t)):
        ltest = t[i]
        if ltest == l:
            return i
    return -1

def codeLettre(l):
    res = '0'
    indice = indiceLettre(cle,l)
    indice += (indice // 9) + 1
    res += str(indice)
    return res

def decodeLettre(l, cle):
    codeInt = int(l)
    codeInt -= 1
    codeInt -= codeInt//10 
    if codeInt < len(cle):
        return cle[codeInt]
    else:
        return ":("


def encode(text, cle):
    res = ''
    for l in text:
        res += codeLettre(l, cle)
    return res

def decode(text, cle):
    res = ''
    codeActuel= ''
    for l in text:
        if l == '0' and len(codeActuel) > 0: 
            res += decodeLettre(codeActuel, cle)
            codeActuel = l
        else:
            codeActuel += l
    res += decodeLettre(codeActuel, cle)
    return res

 

def genCle():
    res = []
    abc = "abcdefghijklmnopqrstuvwxyz " 
    code = ''
    for pas in range(1,len(abc)):
        #print("pas :",pas)
        for start in range(0, len(abc)):
            #print("start :",start)
            for i in range(start, pas * len(abc) + start):
                j = i * start * pas
                code += abc[j%(len(abc)-1)]
                if len(code) == len(abc):
                    res.append(code)
                    code =''
        res.append(code)
        code = ''
                        
    return res

#print(len(genCle()), " code")

aDecode = "01701101013026014013026022050140101307040140110702205050240140101408070901101802801507011014027070140290705050101607"
for cle in itertools.permutations(key):
    k = ''.join(cle)
    print(decode(aDecode, k))