Use Contains, Length and ToUpper from Linq

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using System;
using System.Collections.Generic;
using System.Linq;
public class MainClass {
    public static void Main() {
        string[] names = { "Tom", "Dick", "Harry", "Mary", "Jay" };
        IEnumerable<string> filtered = names.Where(n => n.Contains("a"));
        IEnumerable<string> sorted = filtered.OrderBy(n => n.Length);
        IEnumerable<string> finalQuery = sorted.Select(n => n.ToUpper());

        foreach (string name in filtered)
            Console.Write(name + "|");        

        Console.WriteLine();
        foreach (string name in sorted)
            Console.Write(name + "|");        

        Console.WriteLine();
        foreach (string name in finalQuery)
            Console.Write(name + "|");        
    }
}

    


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