Simple C++ Solution beginner friendly 3ms
\n        vector<string> v;\n        for(int i=0;i<s.length();i=i+k)\n        {\n            string str = s.substr(i,k);\n            if(str.length()==k)\n     
```\n        vector<string> v;\n        for(int i=0;i<s.length();i=i+k)\n        {\n            string str = s.substr(i,k);\n            if(str.length()==k)\n            {\n                v.push_back(str);\n            }\n            else\n            {\n                int a = k - str.length();\n                while(a--)\n                {\n                    str+=fill;\n                }\n                v.push_back(str);\n            }\n        }\n        return v;\n```
['C']