CSHARP

c# negative index

var words = new string[]
{
                // index from start    index from end
    "The",      // 0                   ^9
    "quick",    // 1                   ^8
    "brown",    // 2                   ^7
    "fox",      // 3                   ^6
    "jumped",   // 4                   ^5
    "over",     // 5                   ^4
    "the",      // 6                   ^3
    "lazy",     // 7                   ^2
    "dog"       // 8                   ^1
};              // 9 (or words.Length) ^0

negative indexing in c#

// negative indexing is supported only in C# 8.0 and above
var favoriteShows = new string[] { "Firefly", "Cowboy Bebop", "Samurai Champloo" };

            Console.WriteLine(favoriteShows[^1]); // "Samurai Champloo"
            Console.WriteLine(favoriteShows[^2]); // "Cowboy Bebop"

            Index idx = ^3; // You can declare an index as a variable
            Console.WriteLine(favoriteShows[idx]); // "Firefly"