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recursion_mystery348

Language/Type: Python recursion

Given the function below, what is the output of the following call? (What is the function really doing?)

def mystery(n):
    if n < 10:
        return (10 * n) + n
    else:
        a = mystery(n // 10)
        b = mystery(n % 10)
        return (100 * a) + b
mystery(348)
(order shuffled)

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