题解 | 序列中整数去重

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

int main() {
    int n;
    cin >> n;
    int arr[n];
    vector<int> vec;
    for (int i = 0; i < n; i++) {
        cin >> arr[i];
    }
    for (int i = 0; i < n; i++) {
        bool ex = 0;
        for (int j = 0; j < vec.size(); j++) {
            if (arr[i] == vec[j]) {
                ex = 1;
                break;
            }
        }
        if (!ex) {
            vec.push_back(arr[i]);
        }
    }
    for (int i = 0; i < vec.size(); i++) {
        cout << vec[i] << " ";
    }
}