MedianFinder Class Reference

Collaboration diagram for MedianFinder:

Public Member Functions
	MedianFinder ()
void	addNum (int num)
double	findMedian ()

Private Attributes
priority_queue< int >	max_heap
priority_queue< int, vector< int >, greater< int > >	min_heap

Detailed Description

Definition at line 5 of file main.cpp.

Constructor & Destructor Documentation

MedianFinder()

MedianFinder::MedianFinder ( )

inline

Definition at line 12 of file main.cpp.

{}

Member Function Documentation

addNum()

void MedianFinder::addNum ( int  num )

inline

Definition at line 14 of file main.cpp.

    {
        if (max_heap.empty() || num <= max_heap.top())
        {
            cout << "adding " << num << " to max heap" << endl;
            max_heap.push(num);
        }
        else
        {
            cout << "adding " << num << " to min heap" << endl;
            min_heap.push(num);
        }
 
        // balancing heaps
        if (max_heap.size() > min_heap.size() + 1) 
        {
            cout << "moving " << max_heap.top() << " from max to min heap" << endl; 
            min_heap.push(max_heap.top());
            max_heap.pop();
        }
        else if (min_heap.size() > max_heap.size())
        {
            cout << "moving " << min_heap.top() << " from min to max heap" << endl; 
            max_heap.push(min_heap.top());
            min_heap.pop();
        }
    }

References max_heap, and min_heap.

Referenced by main().

findMedian()

double MedianFinder::findMedian ( )

inline

Definition at line 42 of file main.cpp.

    {
        if (max_heap.size() == min_heap.size())
            return (max_heap.top() + min_heap.top()) / 2.0;
        else
            return max_heap.top();
    }

References max_heap, and min_heap.

Referenced by main().

Field Documentation

max_heap

priority_queue<int> MedianFinder::max_heap

private

Definition at line 8 of file main.cpp.

Referenced by addNum(), and findMedian().

min_heap

priority_queue<int, vector<int>, greater<int> > MedianFinder::min_heap

private

Definition at line 9 of file main.cpp.

Referenced by addNum(), and findMedian().

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The documentation for this class was generated from the following file:

• main.cpp