Priority Queues with C#: Listing 5.
Checking the state of the priority queue.
public bool IsConsistent()
{
if (data.Count == 0) return true;
int li = data.Count - 1; // last index
for (int pi = 0; pi < data.Count; ++pi) // each parent index
{
int lci = 2 * pi + 1; // left child index
int rci = 2 * pi + 2; // right child index
if (lci <= li && data[pi].CompareTo(data[lci]) > 0) return false;
if (rci <= li && data[pi].CompareTo(data[rci]) > 0) return false;
}
return true; // Passed all checks
}
About the Author
Dr. James McCaffrey directs the data science and research efforts at Quaetrix, a data analytics company located near Redmond, Washington. Before joining Quaetrix, James was a senior research engineer at Microsoft. James can be reached at [email protected].