StringBuilder

CSharp · Console

/Program.cs

using System;
using System.Text;
	
public class Program
{
	    public static void Main(string[] args)
    {
        StringBuilder sb = new StringBuilder();

        int[] numbers = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
        for (int counter = 0; counter < 10; counter++)
        {
            StringBuilder numberBuilder = new StringBuilder();
            foreach (int number in numbers)
            {
                numberBuilder.Append(number + " ");
            }

            sb.Insert(0, numberBuilder.ToString());
        }

        Console.WriteLine(sb.ToString());
    }
}