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27 lines
535 B
27 lines
535 B
#include <bits/stdc++.h>
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using namespace std;
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int t;//数据组数
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int n;//表示给定的数
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unordered_map<int, int> _map;
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int x;
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int main() {
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ios::sync_with_stdio(false);
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cin.tie(0); //注意使用cin.tie(0);
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cin >> t;
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while (t--) {
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cin >> n;
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_map.clear();
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for (int i = 1; i <= n; i++) {
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cin >> x;
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if (!_map[x]) {
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cout<<x<<" ";
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_map[x] = 1;
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}
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}
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cout << endl;
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}
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return 0;
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} |