关键思路:
- input()接收的内容, py3中默认为字符串,可以直接作为字符串数组操作
- 字符串数组的逆序遍历,从后往前访问
代码:
num = input()
def reverse(num):
str = ""
for i in range(len(num)-1, -1, -1 ):
str += num[i]
return str
print(reverse(num))
num = input()
def reverse(num):
str = ""
for i in range(len(num)-1, -1, -1 ):
str += num[i]
return str
print(reverse(num))