xxxxxxxxxx
// 1
int ip[] = <integer array>;
unordered_set<int> op;
for(int i : ip) {
op.insert(i);
}
// 2
int ip[] = ;
int n = sizeof(ip) / sizeof(ip[0]);
std::unordered_set op(ip, ip + n);
xxxxxxxxxx
let array = [1, 2, 3, 4, 4, 5];
let set = new Set(array);
console.log(set);