字符串倒序输出

字符串倒序输出

1.字符串

a = input("请输入...")
b = a[::-1]
print(b)

2.列表

方法一

a =["h","e","l","l","o",",","w","o","r","l","d"]
b = []
for i in range(len(a)-1,-1,-1):
    b.append(a[i])
c = ''.join(b)
print(c)
    

方法二

a =["h","e","l","l","o",",","w","o","r","l","d"]
b = []
for i in range(len(a)):
    b.append(a[len(a)-1-i])
c = ''.join(b) #合并列表的元素
print(c)