C#을 사용하여 기수 정렬 알고리즘을 작성하는 방법

using System;

public class RadixSort
{
    public static void Sort(int[] array)
    {
        int max = GetMaxValue(array);
        int digits = GetDigits(max);

        for (int i = 0; i < digits; i++)
        {
            CountingSort(array, i);
        }
    }

    private static int GetMaxValue(int[] array)
    {
        int max = array[0];
        for (int i = 1; i < array.Length; i++)
        {
            if (array[i] > max)
            {
                max = array[i];
            }
        }
        return max;
    }

    private static int GetDigits(int number)
    {
        int digits = 0;
        while (number > 0)
        {
            number /= 10;
            digits++;
        }
        return digits;
    }

    private static void CountingSort(int[] array, int digit)
    {
        int[] count = new int[10];
        int[] sortedArray = new int[array.Length];

        for (int i = 0; i < array.Length; i++)
        {
            int digitValue = GetDigitValue(array[i], digit);
            count[digitValue]++;
        }

        for (int i = 1; i < count.Length; i++)
        {
            count[i] += count[i - 1];
        }

        for (int i = array.Length - 1; i >= 0; i--)
        {
            int digitValue = GetDigitValue(array[i], digit);
            int index = count[digitValue] - 1;
            sortedArray[index] = array[i];
            count[digitValue]--;
        }

        for (int i = 0; i < array.Length; i++)
        {
            array[i] = sortedArray[i];
        }
    }

    private static int GetDigitValue(int number, int digit)
    {
        for (int i = 0; i < digit; i++)
        {
            number /= 10;
        }
        return number % 10;
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        int[] array = { 170, 45, 75, 90, 802, 24, 2, 66 };
        
        Console.WriteLine("Before sorting:");
        foreach (int num in array)
        {
            Console.Write(num + " ");
        }
        
        RadixSort.Sort(array);
        
        Console.WriteLine("

After sorting:");
        foreach (int num in array)
        {
            Console.Write(num + " ");
        }
    }
}

Before sorting:
170 45 75 90 802 24 2 66 

After sorting:
2 24 45 66 75 90 170 802