✅ Simple Straight forward Implementation of the problem statement
We can just directly implement what is said in the problem statement -\n\nKeep modifying the perm as per the give rules till the perm array becomes the orignal 
We can just directly implement what is said in the problem statement -\n\nKeep modifying the `perm` as per the give rules till the `perm` array becomes the orignal perm back again. A simple implementation is given below -\n\n\n```\nint reinitializePermutation(int n) {\n\tvector<int>perm(n), arr(n), original_perm(n);\n\tfor(int i = 0; i < n; i++) perm[i] = i;\n\toriginal_perm = perm;\n\tint cnt = 0;\n\twhile(1){\t\t\n\t\tfor(int i = 0; i < n; i++) // perform operation as per given rules\t\t\t\n\t\t\tarr[i] = (i & 1 ? perm[n/2 + (i - 1) / 2] : perm[i / 2]);            \n\t\t\t//                        ^odd case       :  ^even case\n\t\tcnt++;  // operation count increases by 1\n\t\tif(arr == original_perm) break; // when the permutation becomes to what it originally was, just break and return count\n\t\tperm = arr; // repeat till the above condition is satisfied\n\t}\n\treturn cnt;\n}\n```
['C']