Given a string, return it reversed.

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"foobar" ⟹ "raboof"

Solution 1

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def myreversed(s):
    result = ''
    slen = len(s) - 1
    while slen >= 0:
        result += s[slen]
        slen -= 1
    return result

Solution 2

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def myreversed(s):
    return s if not s else myreversed(s[1:]) + s[0]

Tests

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import pytest
from reverse import myreversed

def test_myreversed():
    return myreversed("foobar") == "raboof"