C++ CODE, STEP TO STEP AS GIVEN IN QUE
\n# Code\n\n// class Solution {\n// public:\n//     int reinitializePermutation(int n) {\n//         vector<int> perm;\n//         for(int i=0;i<n;i++){\n//    
\n# Code\n```\n// class Solution {\n// public:\n//     int reinitializePermutation(int n) {\n//         vector<int> perm;\n//         for(int i=0;i<n;i++){\n//             perm.push_back(i);\n//         }\n//         vector<int> arr(n, 0);\n//         for(int i=0;i<n;i++){\n//             if(i%2 == 0){\n//                 arr[i] = perm[i/2];\n//             }\n//             else if(i%2 == 1){\n//                 arr[i] = perm[n/2 + (i-1)/2];\n//             }\n//         }\n//         int ans = 0;\n//         for(int i=0;i<n;i++){\n//             if(perm[i] != arr[i]){\n//                 ans++;\n//             }\n//         }\n\n//         return ans;\n//     }\n// };\n\nclass Solution {\npublic:\n    int reinitializePermutation(int n) {\n        vector<int> perm(n), arr(n);\n        for(int i = 0; i < n; ++i) {\n            perm[i] = i;\n        }\n        \n        int steps = 0;\n        vector<int> original_perm = perm;  \n        \n        while (true) {\n            ++steps;\n            for (int i = 0; i < n; ++i) {\n                if (i % 2 == 0) {\n                    arr[i] = perm[i / 2];\n                } else {\n                    arr[i] = perm[n / 2 + (i - 1) / 2];\n                }\n            }\n            \n            if (arr == original_perm) {\n                break;\n            }\n            \n            perm = arr;  \n        }\n        \n        return steps;\n    }\n};\n\n```
['C++']