s = list("CCF-GESP") s[:] = s[::-1] print("".join(s))
s = list("CCF-GESP") i, j = 0, len(s) - 1 while i < j: s[i], s[j] = s[j], s[i] i += 1 j -= 1 print("".join(s))
正确
错误