write a recursive function def reverse (string) that computes the reverse of a string. For example, reverse ("flow") should return "wolf" Hint: reverse the substring starting at the second character, then add the first character at the end

Question

Computers & Technology

Cristian Peterson

13 August, 23:11

write a recursive function def reverse (string) that computes the reverse of a string. For example, reverse ("flow") should return "wolf" Hint: reverse the substring starting at the second character, then add the first character at the end

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Answers (1)

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Tess Tyler · Answer 1

def reverse (s):

if (len (s) >1):

return reverse (s[1:]) + s[0]

else:

return s

print reverse ("flow")

Explanation:

The reverse of a string is the reverse of the substring starting at the 2nd char, followed by the first char. Of course you always need a stop criterium to end the recursion. Only recurse if the string has at least 2 characters.