程序代码：

#include<iostream>
#include<stack>
using namespace std;
stack<int>card;
bool flags[10010] = {false};
void get(int n){
    if (flags[n] == false) {
        card.push(n);
        flags[n] = true;
    }
    else return;
}
int main() {
    int n, t;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> t;
        get(t);
    }
    for (int i = 0; i < card.size(); i++) {
        cout << card.top() << " ";
        card.pop();
    }
    return 0;
}

程序代码：

#include<istream>
#include<stack>
using namespace std;
stack<int>cards;
bool flags[10010] = {false};
void get(int n){
    if (flags[n] == false) {
        card.push(n);
        flags[n] = true;
    }
    else return;
}
int main() {
    int n, t;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> t;
        get(i);
    }
    for (int i = 0; i < card.size(); i++) {
        cout << card.top() << " ";
        card.pop();
    }
    return 0;
}

程序代码：

以下是引用return_0在2020-2-26 12:31:21的发言：

最近太无聊了，带大家玩个小游戏，比对上下两个代码，找到三处不同处，最先找到者获10专家分，总共30分，大家加油！
代码1：

#include<iostream>
#include<stack>
using namespace std;
stack<int>card;
bool flags[10010] = {false};
void get(int n){
    if (flags[n] == false) {
        card.push(n);
        flags[n] = true;
    }
    else return;
}
int main() {
    int n, t;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> t;
        get(t);
    }
    for (int i = 0; i < card.size(); i++) {
        cout << card.top() << " ";
        card.pop();
    }
    return 0;
}

代码2：

#include<istream>//这iostream
#include<stack>
using namespace std;
stack<int>cards;//这cards
bool flags[10010] = {false};
void get(int n){
    if (flags[n] == false) {
        card.push(n);
        flags[n] = true;
    }
    else return;
}
int main() {
    int n, t;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> t;
        get(i);//这get(t)
    }
    for (int i = 0; i < card.size(); i++) {
        cout << card.top() << " ";
        card.pop();
    }
    return 0;
}
无聊

[此贴子已经被作者于2020-2-26 12:54编辑过]