题解 | #提取不重复的整数#

#include <iostream>
#include <vector>
using namespace std;

int main() {
    int inputNum;
    cin >> inputNum;
    vector<int>a(10,0);
    int sum;
    while(inputNum > 0)
    {
        int t = inputNum%10;
    
        if(a[t] == 0)
        {
            sum = sum*10 + t;
            a[t] = 1;
        }
        inputNum /= 10;
    }
    printf("%d",sum);
}
// 64 位输出请用 printf("%lld")