题解 | #提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
num = input()
index = []
string = num[::-1]
for i in string:
if string.find(i) not in index:
index.append(string.find(i))
# string = list(string)
for _ in index:
print(string[_], end='')
