[C#] Linq / index, value

ㆍindex, value 사용

<예제>

using System;
using System.Linq;

class ex
{
    static void Main(string[] args)
    {
        int[] a = new int[] { 1, 2, 4 };
        string[] b = new string[] { "a", "b", "c", "d" };

        var query =
            from i in a.Select((value, index) => new { index, value })
            from s in b.Select((value, index) => new { index, value })
            where i.value == (s.index + 1)
            select new
            {
                i = i.value,
                s = s.value
            };

        foreach (var item in query)
            Console.WriteLine($"{item}");
    }
}