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  1. using System;
  2. using System.Linq;
  3. using System.Collections.Generic;
  4.  
  5. public class Program
  6. {
  7.     public static void Main(string[] args)
  8.     {
  9.         var csvString = "G9999999990001800002777107050,G9999999990002777107HMNLAQKPRLLHRAQRWJ010,1,3,29,P,6.74,11.23,07,P,5.25,14.29,08,P,6.89,16.92,07,P,5,4,";
  10.  
  11.         var fields = csvString.Split(',');
  12.         var selected = Enumerable.Range(4, fields.Length - 4)  // 4 .. length-1
  13.             .Where(i => i % 4 <= 1 )  // 4, 5,  8, 9,  12, 13, ...
  14.             .Select(i => fields[i]);
  15.  
  16.         Console.WriteLine(string.Join(" ", selected.ToArray()));
  17.  
  18.         var selected2 = csvString.Split(',')  // 4, 5,  8, 9,  12, 13, ...
  19.             .Where((s,i) => i >= 4 && i % 4 <= 1);
  20.  
  21.         Console.WriteLine(string.Join(" ", selected2.ToArray()));
  22.     }
  23. }
  24.  
Success #stdin #stdout 0.03s 28116KB
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stdin
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Standard input is empty
stdout
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29 P 07 P 08 P 07 P 
29 P 07 P 08 P 07 P
https://ideone.com/VECeSm
language:
C# (gmcs 5.20.1)
created:
5 days ago
visibility:
public

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