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