题解 | #HJ9 提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
# 方法1
# li = list(input())[::-1]
# new_li = []
# for num in li:
# if num not in new_li:
# new_li.append(num)
# print(int("".join(new_li)))
# 方法2
list1 = list(input()[::-1])
list2 = list(set(list1))
list2.sort(key=lambda x: list1.index(x)) # 按照元素在list1中的索引顺序进行排序
print(int("".join(list2)))
