using System;

using System.Collections.Generic;

using System.Linq;

public class Program {

  public static void Main() {

    int[] array = new int[] { 5, 3, 2, 8, 1, 4};

​

    using var odd = array

     .Where(item => item % 2 != 0)

     .OrderBy(item => item)

     .GetEnumerator();

​

    for (int i = 0; i < array.Length; ++i) 

      if (array[i] % 2 != 0 && odd.MoveNext()) 

        array[i] = odd.Current; 

    Console.Write(string.Join(", ", array));  

  }

}