Removing an item from a priority queue.
public T Dequeue()
// Assumes pq isn't empty
int li = data.Count - 1;
T frontItem = data;
data = data[li];
int pi = 0;
int ci = pi * 2 + 1;
if (ci > li) break;
int rc = ci + 1;
if (rc <= li && data[rc].CompareTo(data[ci]) < 0)
ci = rc;
if (data[pi].CompareTo(data[ci]) <= 0) break;
T tmp = data[pi]; data[pi] = data[ci]; data[ci] = tmp;
pi = ci;
About the Author
Dr. James McCaffrey works for Microsoft Research in Redmond, Wash. He has worked on several Microsoft products including Azure and Bing. James can be reached at [email protected].
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