public static void Main(string[] args) {
ArrayList a = new ArrayList2(10);
Contract.Assert(a.Count == 0);
a.Add("apple");
a.Add("cranberry");
a.Add("banana");
Contract.Assert(a.Count == 3);
Contract.Assert(Equals(a[0], "apple"));
Contract.Assert(Equals(a[1], "cranberry"));
Contract.Assert(Equals(a[2], "banana"));
Contract.Assert(a.IndexOf("apple") == 0);
Contract.Assert(a.IndexOf("cranberry") == 1);
Contract.Assert(a.IndexOf("banana") == 2);
Contract.Assert(a.IndexOf("donut") == -1);
a.Sort();
Contract.Assert(a.Count == 3);
Contract.Assert(Equals(a[0], "apple"));
Contract.Assert(Equals(a[1], "banana"));
Contract.Assert(Equals(a[2], "cranberry"));
Contract.Assert(a.BinarySearch("apple") == 0);
Contract.Assert(a.BinarySearch("banana") == 1);
Contract.Assert(a.BinarySearch("cranberry") == 2);
Contract.Assert(a.BinarySearch("donut") < 0);
a.Reverse();
Contract.Assert(a.Count == 3);
Contract.Assert(Equals(a[2], "apple"));
Contract.Assert(Equals(a[1], "banana"));
Contract.Assert(Equals(a[0], "cranberry"));
a.Remove("apple");
Contract.Assert(a.Count == 2);
Contract.Assert(Equals(a[0], "cranberry"));
Contract.Assert(Equals(a[1], "banana"));
a.RemoveAt(5);
a.RemoveAt(0);
Contract.Assert(a.Count == 1);
Contract.Assert(Equals(a[0], "banana"));
a.Clear();
Contract.Assert(a.Count == 0);
Contract.Assert(ArrayList.Repeat("carrot", 3).Count == 3);
}