Which one is more efficient : List or int[]

Question

Can someone tell me which one is more efficient between List and int[]. Because I am working on a project and as you might know efficien

Answer 1

Just for the fun of it, I ran this:

int cap = 100000;

Stopwatch sw1 = new Stopwatch();
sw1.Start();

int[] ix = new int[cap];
for (int x = 0; x < cap; x++)
{
    ix[x] = 1;
}

sw1.Stop();

Stopwatch sw2 = new Stopwatch();
sw2.Start();
List iy = new List(cap);
for (int y = 0; y < cap; y++)
{
    iy.Add(y);
}
sw2.Stop();

Console.WriteLine(cap.ToString() + "     int[]=" + sw1.ElapsedTicks.ToString());
Console.WriteLine(cap.ToString() + " List=" + sw2.ElapsedTicks.ToString());

Console.ReadKey();

And got this:

100000 int[]=1796542
100000 List=2517922

I tried it in elapsed milliseconds and got 0 and 1 respectively. Clearly the int[] is way faster, but unless you're talking huge arrays, I'd say it is just nominal.