nbdelettres.py

Created by schraf

Created on September 16, 2018

526 Bytes

On part d’un nombre, par exemple 235, que l’on écrit en français chiffre par chiffre, ce qui donne “deuxtroiscinq”. Ce mot fait 13 lettres qui, transformé en français, fait “untrois”. Ce mot lui-même fait 7 lettres (“sept”) d’où 4 lettres (“quatre”) puis 6 lettres (“six”) puis “trois”, “cinq” et à nouveau “quatre”.

On s’arrête lorsque l’on retombe sur un nombre que l’on a déjà obtenu. Donnons un autre exemple :

>> nb(171)
unseptun
huit
quatre
six
trois
cinq
'quatre'


chiffres = ["zero","un","deux","trois","quatre","cinq","six","sept","huit","neuf"]

def suiv(n):
  return "".join(map(code, str(n)))

def code(n):
  return chiffres[int(n)]

def nb(n):
  vus = []
  s=suiv(n)
  while s not in vus:
    print(s)
    vus.append(s)    
    s=suiv(len(s))
  return s
  
# Version 2

def suiv2(n):
  return "".join(map(lambda n:chiffres[int(n)], str(n)))

def nb2(n):
  vus = []
  s=suiv2(n)
  while s not in vus:
    print(s)
    vus.append(s)    
    s=suiv2(len(s))
  return s

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