是的，在C++ priority_queue中，我们可能有重复的值。
// C++ program to demonstrate that duplicate
// values are allowed in a priority queue
// (with maximum value at the top)
#include
using namespace std;
int main()
{
priority_queue pq;
pq.push(30);
pq.push(5);
pq.push(30);
cout << pq.top() << " ";
pq.pop();
cout << pq.top() << " ";
pq.pop();
return 0;
}
输出：
30 30
// C++ program to demonstrate that duplicate
// values are allowed in a priority queue
// (with minimum value at the top)
#include
using namespace std;
int main()
{
priority_queue pq;
pq.push(5);
pq.push(5);
pq.push(5);
cout << pq.top() << " ";
pq.pop();
cout << pq.top() << " ";
pq.pop();
cout << pq.top() << " ";
pq.pop();
return 0;
}
输出：
5 5 5
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