Knutt-Moris-Pratt Prefix-function
def create_suffix(str_): pis = [0]*len(str_) for ind, elem in enumerate(str_): if (ind > 0): j = pis[ind - 1] while((j > 0) & (str_[j] != str_[ind])): j = pis[j - 1] if (str_[j] == str_[ind]): j += 1 pis[ind] = j
return pis