1 line simple recursive Python
\nclass Solution(object):\n    def reverseStr(self, s, k):\n        """\n        :type s: str\n        :type k: int\n        :rtype: str\n        """\n        r
```\nclass Solution(object):\n    def reverseStr(self, s, k):\n        """\n        :type s: str\n        :type k: int\n        :rtype: str\n        """\n        return s[:k][::-1] + s[k:2*k] + self.reverseStr(s[2*k:], k) if s else ""\n```
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