using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;

public class SpeedTest : MonoBehaviour {

  void Start () {

    Stopwatch stopwatch = new Stopwatch();
    int testLength = 1000;
    int testIterations = 10000;
    var results = new Dictionary<string, float>();


    int[] intArray = new int[testLength];
    ArrayList intArrayList = new ArrayList(testLength);
    List<int> intList = new List<int>(testLength);


    // ----------------- int[] ----------------------

    stopwatch.Reset();
    stopwatch.Start();
    for (int i=0; i < testIterations; ++i)
    {
      for (int n=0; n < intArray.Length; ++n)
      {
        intArray[n] = n;
      }
      if (i==0) { stopwatch.Reset(); stopwatch.Start(); }
    }
    stopwatch.Stop();
    results.Add("Fill int[]",stopwatch.ElapsedTicks);


    // ----------------- ArrayList ----------------------

    stopwatch.Reset();
    stopwatch.Start();
    for (int i=0; i < testIterations; ++i)
    {
      for (int n=0; n < intArrayList.Count; ++n)
      {
        intArrayList[n] = n;
      }
      if (i==0) { stopwatch.Reset(); stopwatch.Start(); }
    }
    stopwatch.Stop();
    results.Add("Fill ArrayList",stopwatch.ElapsedTicks);



    // ----------------- List<int> ----------------------

    stopwatch.Reset();
    stopwatch.Start();
    for (int i=0; i < testIterations; ++i)
    {
      for (int n=0; n < intList.Count; ++n)
      {
        intList[n] = n;
      }
      if (i==0) { stopwatch.Reset(); stopwatch.Start(); }
    }
    stopwatch.Stop();
    results.Add("Fill List<int>",stopwatch.ElapsedTicks);




    // ------------------ Results ---------------------

    string resultText = "Results: \n";
    foreach(var result in results)
    {
      resultText += result.Key + ": " + result.Value + "\n";
    }

    UnityEngine.Debug.Log(resultText);



  }

}