// https://msdn.microsoft.com/en-us/library/dd537609(v=vs.110).aspx
private static int ParallelTaskLoop(List <long> names, RedBlackSearchTree strTree)
{
int countCPU = 8;
Task <int>[] tasks = new Task <int> [countCPU];
for (var j = 0; j < countCPU; j++)
{
tasks[j] = Task <int> .Factory.StartNew(
(object p) =>
{
int count = 0;
for (int i = (int)p; i < names.Count; i += countCPU)
{
if (strTree.Contains(names[i].ToString()))
{
count++;
}
}
return(count);
}, j);
}
int total = 0;
for (var i = 0; i < countCPU; i++)
{
total += tasks[i].Result;
}
return(total);
}
static void Main(string[] args)
{
List <long> nameList = new List <long>();
RedBlackSearchTree strTree = new RedBlackSearchTree();
int seed = (int)DateTime.Now.Ticks & 0x0000FFFF;
random = new Random(seed);
int n = 15;
for (int i = 0; i < n; i++)
{
long s = random.Next(20000);
nameList.Add(s);
strTree.Insert(s);
}
nameList.Add(random.Next(20000));
Console.WriteLine(" Binary Search Tree \n");
strTree.Print();
Console.WriteLine("\n Search Test \n");
long allTime = 0; //all execution time
foreach (long s in nameList)
{
var time = new System.Diagnostics.Stopwatch();
time.Start();
bool contains = strTree.Contains(s.ToString());
//strTree.Contains(s);
time.Stop();
allTime += time.ElapsedTicks;
Console.Write(contains.ToString() + " " + time.ElapsedTicks + "ticks" + " ");
}
Console.WriteLine("\n");
Console.WriteLine("{0}ms", (double)allTime / 10000);
}
static void Main(string[] args)
{
List <long> nameList = new List <long>();
RedBlackSearchTree strTree = new RedBlackSearchTree();
int seed = (int)DateTime.Now.Ticks & 0x0000FFFF;
random = new Random(seed);
int n = 50000;
var stopWatch = new Stopwatch();
for (int i = 0; i < n; i++)
{
long s = random.Next(20000);
nameList.Add(s);
strTree.Insert(s);
}
nameList.Add(random.Next(20000));
stopWatch.Start();
int count = SequentialLoop(nameList, strTree);
stopWatch.Stop();
Console.WriteLine("Time in milliseconds for sequential loop: {0,6:N0} ",
stopWatch.ElapsedMilliseconds);
Console.WriteLine("Contains: {0,6:N0} Total: {1,6:N0}", count, nameList.Count);
stopWatch.Reset();
stopWatch.Start();
count = ParallelTaskLoop(nameList, strTree);
stopWatch.Stop();
Console.WriteLine("Time in milliseconds for parallel loop: {0,6:N0} ",
stopWatch.ElapsedMilliseconds);
Console.WriteLine("Contains: {0,6:N0} Total: {1,6:N0}", count, nameList.Count);
/*
* Console.WriteLine(" Binary Search Tree \n");
* strTree.Print();
* Console.WriteLine("\n Search Test \n");
* long allTime = 0; //all execution time
* foreach (long s in nameList)
* {
* var time = new System.Diagnostics.Stopwatch();
* time.Start();
* bool contains = strTree.Contains(s.ToString());
* //strTree.Contains(s);
* time.Stop();
* allTime += time.ElapsedTicks;
* Console.Write(contains.ToString() + " "+ time.ElapsedTicks + "ticks" + " ");
* }
* Console.WriteLine("\n");
* Console.WriteLine("{0}ms", (double)allTime / 10000);
*/
}
private static int SequentialLoop(List <long> names, RedBlackSearchTree strTree)
{
int count = 0;
for (int i = 0; i < names.Count; i++)
{
if (strTree.Contains(names[i].ToString()))
{
count++;
}
}
return(count);
}