Texte encadré

Exercice

Coder une fonction récursive encadre qui prend en paramètres une chaine de caractères texte et un entier positif n et qui renvoie le texte encadré n fois par des crochets [...].

Exemples

🐍 Console Python

>>> encadre('bonjour', 3)
'[[[bonjour]]]'
>>> encadre('à tous', 0)
'à tous'

Aide

Allez-vous utiliser print(un_truc) ou return un_truc ?

Mauvaise réponse

🐍 Script Python

def encadre(texte, n):
    """Renvoie un texte encadre n fois par des [...]"""
    if n == 0:
        print(texte, end="")
    else:
        print("[", end="")
        encadre(texte, n - 1)
        print("]", end="")

Cette solution semble correcte,
mais elle ne renvoie pas le texte, elle l'affiche !

Guide

🐍 Script Python

def encadre(texte, n):
    """Renvoie un texte encadre n fois par des [...]"""
    if ...:
        return ... + encadre(..., ...) + ...
    else:
        return ...

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def encadre(texte, n):
    """Renvoie un texte encadre n fois par des [...]"""
    ...
# Tests
assert encadre('bonjour', 3) == '[[[bonjour]]]'
assert encadre('à tous', 0) == 'à tous'
 
 
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Évaluations restantes : 5/5

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