public void IndexMinPQ_Contains()
{
var q = new IndexPriorityQueue<int>();
Assert.IsFalse(q.Contains(1));
q.Enqueue(1, 10);
q.Enqueue(1, 20);
q.Enqueue(1, 30);
Assert.IsTrue(q.Contains(1));
q.Dequeue();
Assert.IsTrue(q.Contains(1));
q.Dequeue();
Assert.IsTrue(q.Contains(1));
q.Dequeue();
Assert.IsFalse(q.Contains(1));
}
public void IndexMinPQ_Enqueue()
{
var q = new IndexPriorityQueue<int>();
var minItem = int.MaxValue;
for (int i = 0; i < items.Length; i++)
{
// After adding each item, the min item should be on top
q.Enqueue(i, items[i]);
minItem = Math.Min(items[i], minItem);
Assert.IsTrue(q.Contains(i));
Assert.AreEqual(q.MinKey(), minItem);
}
}
static void time_index_pq(int MAXID, int MAXCOUNT, int mod, int rounds, LocalProfiler profiler)
{
profiler.Start("index_all");
profiler.Start("index_initialize");
IndexPriorityQueue PQ_Index = new IndexPriorityQueue(MAXID);
profiler.StopAndAccumulate("index_initialize");
for (int ri = 0; ri < rounds; ++ri)
{
profiler.Start("index_push");
int count = 0;
int id = 0;
while (count < MAXCOUNT)
{
id = (id + mod) % MAXID;
PQ_Index.Enqueue(id, count);
count++;
}
profiler.StopAndAccumulate("index_push");
profiler.Start("index_update");
Random r = new Random(31337);
id = 0; count = 0;
while (count++ < MAXCOUNT)
{
id = (id + mod) % MAXID;
float new_p = count + ((r.Next() % 1000) - 1000);
PQ_Index.Update(id, new_p);
}
profiler.StopAndAccumulate("index_update");
profiler.Start("index_pop");
while (PQ_Index.Count > 0)
{
int index_id = PQ_Index.Dequeue();
}
profiler.StopAndAccumulate("index_pop");
}
profiler.StopAndAccumulate("index_all");
}
public void IndexMinPQ_Dequeue()
{
var q = new IndexPriorityQueue<int>();
for (int i = 0; i < items.Length; i++)
{
q.Enqueue(i, items[i]);
}
var sortedItems = new List<int>(items);
sortedItems.Sort();
foreach (var item in sortedItems)
{
// The top of the queue returns the items in sorted order
var minIndex = q.Dequeue();
Assert.IsFalse(q.Contains(minIndex));
Assert.AreEqual(items[minIndex], item);
}
}
public static void test_pq_debuggable()
{
int MAXID = 10;
IndexPriorityQueue QIndex = new IndexPriorityQueue(MAXID);
DynamicPriorityQueue <TestDynamicNode> QDynamic = new DynamicPriorityQueue <TestDynamicNode>();
TestDynamicNode[] dyn_nodes = new TestDynamicNode[MAXID];
bool verbose = false;
//int n = 1;
for (int i = 0; i < MAXID; ++i)
{
//n = (n + 17) % 17;
int id = i;
float priority = 1.0f - (float)i / 10.0f;
QIndex.Enqueue(id, priority);
if (verbose)
{
System.Console.WriteLine("i = {0}", i);
}
QIndex.DebugPrint();
if (verbose)
{
System.Console.WriteLine("---", i);
}
dyn_nodes[i] = new TestDynamicNode()
{
id = id
};
QDynamic.Enqueue(dyn_nodes[i], priority);
QDynamic.DebugPrint();
}
System.Console.WriteLine("Dequeing...");
for (int i = 0; i < MAXID; ++i)
{
float newp = (float)((i + MAXID / 2) % MAXID) / 10.0f;
QIndex.Update(i, newp);
QDynamic.Update(dyn_nodes[i], newp);
//System.Console.WriteLine("UPDATE {0} {1}", QIndex.First, QDynamic.First.id);
//QIndex.DebugPrint();
//System.Console.WriteLine("---", i);
//QDynamic.DebugPrint();
Util.gDevAssert(QIndex.First == QDynamic.First.id);
}
for (int i = 0; i < MAXID; ++i)
{
int id = QIndex.Dequeue();
var node = QDynamic.Dequeue();
Util.gDevAssert(id == node.id);
if (verbose)
{
System.Console.WriteLine("DEQUEUE {0} {1}", id, node.id);
}
if (verbose)
{
QIndex.DebugPrint();
}
if (verbose)
{
System.Console.WriteLine("---", i);
}
if (verbose)
{
QDynamic.DebugPrint();
}
}
}
public static void test_pq()
{
System.Console.WriteLine("testing priority queues...");
int MAXID = 1000000;
int MAXCOUNT = 100;
int mod = 31337;
for (int kk = 0; kk < 3; ++kk)
{
if (kk == 1)
{
MAXCOUNT = MAXID / 10;
}
else if (kk == 2)
{
MAXCOUNT = MAXID;
}
IndexPriorityQueue PQ_Index = new IndexPriorityQueue(MAXID);
DynamicPriorityQueue <TestDynamicNode> PQ_Dynamic = new DynamicPriorityQueue <TestDynamicNode>();
MemoryPool <TestDynamicNode> Dynamic_Pool = new MemoryPool <TestDynamicNode>();
Dictionary <int, TestDynamicNode> DynamicNodes = new Dictionary <int, TestDynamicNode>();
System.Console.WriteLine("inserting {0} of {1}", MAXCOUNT, MAXID);
int count = 0;
int id = 0;
while (count < MAXCOUNT)
{
id = (id + mod) % MAXID;
PQ_Index.Enqueue(id, count);
TestDynamicNode node = Dynamic_Pool.Allocate();
node.Initialize(id);
PQ_Dynamic.Enqueue(node, count);
DynamicNodes[id] = node;
count++;
}
Util.gDevAssert(PQ_Index.IsValidQueue());
Util.gDevAssert(PQ_Dynamic.IsValidQueue());
Util.gDevAssert(PQ_Index.Count == PQ_Dynamic.Count);
Util.gDevAssert(PQ_Index.First == PQ_Dynamic.First.id);
check_same(PQ_Index, PQ_Dynamic);
Random r = new Random(31337);
System.Console.WriteLine("updating...");
id = 0; count = 0;
while (count++ < MAXCOUNT)
{
id = (id + mod) % MAXID;
float new_p = count + ((r.Next() % 1000) - 1000);
PQ_Index.Update(id, new_p);
PQ_Dynamic.Update(DynamicNodes[id], new_p);
}
Util.gDevAssert(PQ_Index.IsValidQueue());
Util.gDevAssert(PQ_Dynamic.IsValidQueue());
check_same(PQ_Index, PQ_Dynamic);
System.Console.WriteLine("removing...");
while (PQ_Index.Count > 0)
{
int index_id = PQ_Index.Dequeue();
TestDynamicNode node = PQ_Dynamic.Dequeue();
Util.gDevAssert(index_id == node.id);
}
}
}