Python3, string ->List ->string
\nclass Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        # Convert the input string into a list of characters\n        mylist = list(s)\n   
```\nclass Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        # Convert the input string into a list of characters\n        mylist = list(s)\n        \n        # Iterate through the list with a step size of 2k\n        for i in range(0, len(mylist), k + k):\n            # Reverse the sublist of characters within the range of i to i + k\n            mylist[i:k + i] = reversed(mylist[i:k + i])\n            \n        # Join the reversed list of characters back into a string and return it\n        return "".join(mylist)\n\n```
['String', 'Python3']