stl priority queue based on lower value first

Question

I have a problem with stl priority queue.I want to have the priority queue in the increasing order,which is decreasing by default.Is there any way to do this in priority qu

Answer 1

You can use comparator class/struct to achieve the same in priority queue.

class CompareHeight 
{ 
    public:
        bool operator()(int &p1, int &p2) 
        {
            return p1 > p2; 
        } 
};

Now declare the priority queue as

priority_queue, CompareHeight> pq;