Interviews: Reverse Word Order

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Question

Rather than reverse the string, reverse the word order

Solution

For this question, let’s make it simple and steal one of the solutions to the question on reversing a string. We’ll need to make an alteration to allow for list explosion based on whitespace rather than individual characters:

def revWordList(input):
    return ' '.join(reversed(input.split(' ')))

This function explodes (or “splits”) the string based on a space, calls the list reverse, then implodes (or “joins”) the list into a string by reintroducing the space.

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