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CSharp · Console

/Program.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
					
public class Program
{
    struct element
    {
      public    string name;
      public string sex;
      public int numComp;
    } ;
	public static void Main()
	{
		string input = "Jervie, 12, M , Jaimy ,11, F, Tony , 23, M ,Janey , 11, F";
		var elements = input.Split(',').Where(x => !string.IsNullOrWhiteSpace(x))
										.Select(x => x.Trim()).Chunk(3)
										.Select(x =>
												{
													var i = x.ToList();
													return new element
													{
														name = i[0],
														numComp = int.Parse( i[1]),
														sex = i[2],
													};
												});
		var sorted = elements.OrderBy(x => x.numComp).ToList();
		var temp = sorted.Select(x => x.name + ", " + x.numComp+", " + x.sex  );
		var output =  string.Join(", ",temp);
		Console.WriteLine(output);
	}
}

public static class LinqExtension
{
	public static IEnumerable<IEnumerable<T>> Chunk<T>(this IEnumerable<T> source, int chunksize)
{
    while (source.Any())
    {
        yield return source.Take(chunksize);
        source = source.Skip(chunksize);
    }
}
}