As you know, a cell cycle is start from one end phase to next end phase of Mitosis (or Amitosis). Similarly, let’s define a string cycle. Let T be a substring of S, and S can be generated by T. That means if we append T to T for several times, S will become a substring of T. The string cycle of string S is the smallest length of such T. Now give you a string, please find the string cycle of S.