Python Easy Solution
class Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        s3=""\n        p=0\n        for i in range(0,len(s),k):\n            s2=""\n         
class Solution:\n    def reverseStr(self, s: str, k: int) -> str:\n        s3=""\n        p=0\n        for i in range(0,len(s),k):\n            s2=""\n            s2=s[i:i+k]\n            if(p%2==0):\n                s2=s2[::-1]\n            s3=s3+s2\n            p=p+1\n        return s3\n
['Python']