Simple Python solution in one line Python string fundamental: string[start:end:step] start = -1 end = -(1+len(str)) step = -1
#
# 反转字符串
# @param str string字符串
# @return string字符串
#
class Solution:
def solve(self , str ):
# write code here
return str[-1:-(1+len(str)):-1]