#include<iostream>
#include<iomanip>
#include<set>
#include<vector>
#include<algorithm>
using namespace std;
class SetOperation
{
public:
// Add any codes you want here
SetOperation(int a[], int a_size, int b[], int b_size) {
for(int it = 0; it < a_size; it++) {
setA.insert(a[it]);
}
for(int it = 0; it < b_size; it++) {
setB.insert(b[it]);
}
}
set<int> Union() {
set<int> un;
for(set<int>::iterator it = setA.begin(); it != setA.end(); it++) {
un.insert(*it);
}
for(set<int>::iterator it = setB.begin(); it != setB.end(); it++) {
for(set<int>::iterator j = setA.begin(); j != setA.end(); j++) {
if(*j != *it) {
un.insert(*it);
break;
}
}
}
return un;
};
set<int> Intersetion() {
set<int> inte;
for(set<int>::iterator it = setB.begin(); it != setB.end(); it++) {
for(set<int>::iterator j = setA.begin(); j != setA.end(); j++) {
if(*j == *it) {
inte.insert(*it);
break;
}
}
}
return inte;
};
private:
set<int> setA;
set<int> setB;
};
void printSet(const set<int> &s) {
bool first = true;
for (set<int>::iterator it = s.begin(); it != s.end(); it++) {
if (!first) cout << " ";
else first = false;
cout << *it;
}
cout << endl;
}
int main(int argc, char *argv[]) {
int a[7] = {8, 7, 5, 3, 1, 4, 6};
int b[4] = {2, 3, 5, 4};
SetOperation s1(a, 7, b, 4);
printSet(s1.Union());
printSet(s1.Intersetion());
return 0;
}
