using System;

using System.Collections; 

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        var array = new string [] {"windows","dual sim","32 gb","Intel i5"};

        string searchString = "32 gb";

        Array.FindIndex(array, x=> searchString.IndexOf(x) >=0).Dump();

    }

}

​

public struct XYStruct

        {

            public int vertexId;

            public double x;

            public double y;

        }

​

​