Question

How to use Array.Sort() method to reverse sort the elements in 1D Array using IComparer in C#

Answer 1

using System;
using System.Collections;

namespace ConsoleApplication_C_Sharp
{
    public class ReverseComparer : IComparer
    {
        public int Compare(Object x, Object y)
        {
            return (new CaseInsensitiveComparer()).Compare(y, x);
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            String[] arr = new String[] { "hhh", "ccc", "bbb", "ggg" , "eee", "aaa", "ddd" };

            IComparer revComparer = new ReverseComparer();

            Array.Sort(arr, revComparer);

            Console.WriteLine("arr: {0}", string.Join(", ", arr));
        }
    }
}


/*
run:
    
arr: hhh, ggg, eee, ddd, ccc, bbb, aaa
   
*/

 

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