ReverseInteger.cs

public class Solution
{
    public int Reverse(int number)
    {
        try
        {
            int[] digitArray = GetDigitArray(number);
            return ConvertDigitArrayToInteger(digitArray.Reverse().ToArray());	
        }
        catch (OverflowException)
        {
            return 0;
        }
    }
    
    private static int[] GetDigitArray(int number)
    {
        int digitCount = GetDigitCount(number);
        int[] digitArray = new int[digitCount];

        int pivot = number;
        for (int i = digitCount - 1; i >= 0; i--)
        {
            int digit = GetLastDigit(pivot, out int left);
            digitArray[i] = digit;
            pivot = left;
        }

        return digitArray;
    }

    private static int GetLastDigit(int number, out int left)
    {
        int lastDigit = number % 10;
        left = (number - lastDigit) / 10;
        return lastDigit;
    }

    private static int GetDigitCount(int number, int power = 0)
    {
        number = Math.Abs(number);
        if (number >= Math.Pow(10, power))
            return GetDigitCount(number, power + 1);

        return power;
    }

    private static int ConvertDigitArrayToInteger(int[] array)
    {
        int result = 0;
        int digitCount = array.Length;

        checked
        {
            for (int i = 0; i < digitCount; i++)
            {
                result += array[i] * (int)Math.Pow(10, digitCount - i - 1);
            }

            return result;	
        }
    }
}