对字符串中偶数位置的数据进行逆序输出

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/

s = input(">>>")
s = s.lower()[::2][::-1]
print(s)

s=list(input()[::-1])#逆序
for j in range(len(s)):
    if s[j].isalpha():
        s[j]=s[j].lower()
        
for i in range(len(s)-1):
    if i %2==0:
        print(s[i],end='')
if (len(s)-1)%2==0:
    print(s[-1])

望采纳