public static void TestPerformance(){
const int Count = 1*1000*1000;
var rand = new Random(1);
var w = Stopwatch.StartNew();
for(int i=0;i<Count;i++)
rand.Next();
Console.WriteLine("rand " + w.Elapsed);
var items = Enumerable.Range(0, Count).Select(n=>rand.Next()).ToArray();
var treap = new Treap<int>();
w = Stopwatch.StartNew();
foreach(var item in items)
treap.Add(item);
Console.WriteLine("insert " + w.Elapsed);
w = Stopwatch.StartNew();
foreach(var item in items)
treap.Contains(item);
Console.WriteLine("lookup " + w.Elapsed);
w = Stopwatch.StartNew();
foreach(var item in items){
int v;
treap.TryGetValue(item, out v);
}
Console.WriteLine("tryget " + w.Elapsed);
w = Stopwatch.StartNew();
foreach(var item in items)
treap.Remove(item);
Console.WriteLine("remove " + w.Elapsed);
w = Stopwatch.StartNew();
foreach(var item in items)
{ //
}
Console.WriteLine("iterate " + w.Elapsed);
}
public static void Test(){
const int Count = 1*1000;
var treap = new Treap<int>();
Assert.AreEqual(treap.Count, 0);
var rand = new Random(1);
var items = Enumerable.Range(0, Count *2).Select(n=> rand.Next()).Distinct().Take(Count).ToArray();
for(int i=0;i<items.Length;i++){
treap.Add(items[i]);
Assert.AreEqual(i+1, treap.Count);
for(int j= 0;j<=i;j++)
Assert.IsTrue(treap.Contains(items[j]));
}
Assert.LessOrEqual(treap.Count, Count);
var x = treap.First();
int count =1;
foreach(var item in treap.Skip(1)){
Assert.Greater(item, x);
x = item;
count++;
}
Assert.AreEqual(count, treap.Count);
foreach(var item in items){
int v;
Assert.IsTrue(treap.TryGetValue(item, out v));
Assert.AreEqual(item, v);
}
count = treap.Count;
for(int i=0;i<items.Length;i++){
treap.Remove(items[i]);
count--;
Assert.AreEqual(count, treap.Count);
for(int j= 0;j<=i;j++)
Assert.IsFalse(treap.Contains(items[j]));
}
}
