how to use priority queue constructor c++ code example
Example 1: how to use priority queue comparator stl c++
void SamplePriorityQueueWithLamda()
{
auto compare = [](int lhs, int rhs)
{
return lhs < rhs;
};
std::priority_queue<int, std::vector<int>, decltype(compare)> q(compare);
for(int n : {1,8,5,6,3,4,0,9,7,2})
q.push(n);
printQueue(q);
}
Example 2: implemetation of priority queue in c++
priority_queue<int> pq;
priority_queue <int, vector<int>, greater<int> > pq;
#define pp pair<int, int>
priority_queue <pp, vector<pp>, greater<pp> > pq;