using System; using System.Linq; using System.Collections.Generic; using static System.Console; class Program { static void Main(string[] args) { var array2d = (new string[,] { {"a", "b"}, {"c", "d"}, {"a", "x"} }).Print("array2d"); var jaggedArray = (new string[][] { new string[] {"c", "z"}, new string[] {"z", "b"}, new string[] {"b", "b"} }).Print("jaggedArray"); var listofArrays = (new List { new[] {"c", "d"}, new[] {"c", "z"}, new[] {"b", "b"} }).Print("listofArrays"); var nestedLists = (new List> { new List {"a", "b"}, new List {"a", "x"}, new List {"z", "b"} }).Print("nestedLists"); var listOfTuples = (new List<(string s1, string s2)> { (s1: "a", s2: "b"), (s1: "z", s2: "b"), (s1: "b", s2: "b") }).Print("listOfTuples"); } } static class Extensions { //Print 2-Dimensional Array static public string[,] Print(this string[,] items,string name) { Title(name, items.Length / 2); for(var i = 0; i < items.Length / 2; i++){ Print(items[i, 0], items[i, 1]); } return items; } //Print Jagged Array static public string[][] Print(this string[][] items, string name) { items.Cast>() .Select(i => i.OfType()) .ToList() .Print(name); return items; } //Print Tuple static public IEnumerable<(string s1, string s2)> Print(this IEnumerable<(string s1, string s2)> items, string name) { Title(name, items.Count()); foreach(var item in items) { Print(item.s1, item.s2); } return items; } //Print Nested Lists static public IEnumerable> Print(this IEnumerable> items, string name) { Title(name, items.Count()); foreach(var item in items) Print(item.First(), item.Last()); return items; } static void Title(string name, int count) => WriteLine($"\n{name} ({count} - items)"); static void Print(string s1, string s2) => WriteLine($" - {s1}|{s2}"); }

Various Types of String Pairs