Python3 Easy Solution With Comments
\n# Approach\nThe reverseStr function takes two inputs, a string s and an integer k. It first converts the input string to a list of characters using the list()
\n# Approach\nThe reverseStr function takes two inputs, a string s and an integer k. It first converts the input string to a list of characters using the list() function. Then, it initializes a variable n to the length of the input string.\n\nThe function uses a while loop to iterate through the string with a step of 2k. In each iteration, it reverses the first k characters using list slicing and the [::-1] notation to reverse the order of the elements. If there are fewer than k characters left, the function reverses all of them. Finally, the function skips the next 2k characters by incrementing the index i by 2k.\n\nAfter the loop completes, the function converts the list of characters back to a string using the join() method with an empty delimiter. The resulting string is returned as the output of the function.\n\n\n# Code\n```\nclass Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        # convert the string to a list of characters\n        s_list = list(s)\n        n = len(s)\n        i = 0\n        while i < n:\n            # reverse the first k characters\n            if i + k <= n:\n                s_list[i:i+k] = s_list[i:i+k][::-1]\n            # if fewer than k characters left, reverse all of them\n            else:\n                s_list[i:] = s_list[i:][::-1]\n            # skip the next 2k characters\n            i += 2 * k\n        # convert the list of characters back to a string\n        return \'\'.join(s_list)\n\n\n\n\n\n\n```
['Python3']