Simple and easy Python solution
My concept is to for loop and split every 4 letter as a group,\neach group will reverse first 2 letter and add remaining letter.\neach loop Add word to the empt
My concept is to for loop and split every 4 letter as a group,\neach group will reverse first 2 letter and add remaining letter.\neach loop Add word to the empty string call "sentence"\n```\nclass Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        sentence = ""\n        for x in range(0, len(s), k+k):\n            word = s[x:x+k+k]\n            sentence += word[0:k][::-1]+word[k:] \n        return sentence\n```
['Python3']