private void button1_Click(object sender, EventArgs e)
{
if (is_number_valid(sender, e))
{
int length = 1000000;
int ElementToSearch = Convert.ToInt32(textBox1.Text);
bool flag = false;
Stopwatch sw = new Stopwatch();
sw.Start();
for (int i = 0; i < length; i++)
{
if (randArray[i] == ElementToSearch)
{
sw.Stop();
textBox2.Text = Convert.ToString(sw.Elapsed);
label4.Text = "at index " + Convert.ToString(i);
flag = true;
}
}
if (!flag)
{
textBox2.Text = "Not Found";
label4.Text = "";
textBox3.Text = "Not Found";
label5.Text = "";
}
if (flag)
{
int num_threads = 5;
ParameterizedThreadStart parameterizedThread = new ParameterizedThreadStart(threadsearching);
Thread[] threads = new Thread[num_threads];
sw.Reset();
sw.Start();
Monitor.Enter(randArray);
for (int i = 0; i < num_threads; i++)
{
threads[i] = new Thread(parameterizedThread);
object threadsearch = new ThreadSearch(i, i * threadsize, (i * threadsize) + threadsize, ElementToSearch);
threads[i].Start(threadsearch);
}
Monitor.Exit(randArray);
sw.Stop();
for (int i = 0; i < num_threads; i++)
{
threads[i].Join();
}
textBox3.Text = Convert.ToString(sw.Elapsed);
label5.Text = label4.Text;
}
}
}
public void threadsearching(object param)
{
ThreadSearch ts = (ThreadSearch)param;
for (int i = ts.startIndex; i < ts.endIndex; i++)
{
if (randArray[i] == ts.key)
{
positions.Add(i);
}
}
}