What are some good examples of arrays in C#?

using System; class Demo { static void commonElements(int []one, int []two, int []three) { int i = 0, j = 0, k = 0; while (i < one.Length && j < two.Length && k < three.Length) { if (one[i] == two[j] && two[j] == three[k]) { Console.Write(one[i] + " "); i++;j++;k++; } else if (one[i] < two[j]) i++; else if (two[j] < three[k]) j++; else k++; } } public static void Main() { int []one = {20, 35, 57, 70}; int []two = {9, 35, 57, 70, 92}; int []three = {25, 35, 55, 57, 67, 70}; Console.Write("Common elements: "); commonElements(one, two, three); } }

using System; using System.Collections; namespace CollectionApplication { class Program { static void Main(string[] args) { ArrayList al = new ArrayList(); al.Add(99); al.Add(47); al.Add(64); Console.WriteLine("Count: {0}", al.Count); Console.Write("List: "); foreach (int i in al) { Console.Write(i + " "); } Console.WriteLine(); Console.ReadKey(); } } }

using System; namespace ArrayApplication { class MyArray { static void Main(string[] args) { int[][] points = new int[][]{new int[]{10,5},new int[]{30,40}, new int[]{70,80},new int[]{ 60, 70 }}; int i, j; for (i = 0; i < 3; i++) { for (j = 0; j < 2; j++) { Console.WriteLine("a[{0}][{1}] = {2}", i, j, points[i][j]); } } // access int x = points[0][1]; Console.WriteLine(x); Console.ReadKey(); } } }