using System;

public class Program

{

    public static void Main()

    {

        int[] testcases = { int.MinValue, int.MaxValue, 1, -1, 0 };

        foreach (var testcase in testcases)

        {

            byte[] buffer = new byte[4];

            Int32ToBytes(testcase, buffer, 0);

            int output = BytesToInt32(buffer, 0);

            Console.WriteLine($"{testcase,13} --> {output,13}");

        }

    }

    public static void Int32ToBytes(int input, byte[] target, int offset = 0)

    {

        target[offset] = (byte)(input >> 24);

        target[offset + 1] = (byte)(input >> 16);

        target[offset + 2] = (byte)(input >> 8);

        target[offset + 3] = (byte)input;

    }

    public static int BytesToInt32(byte[] source, int offset = 0)

    {

        return source[offset] << 24 | source[offset + 1] << 16 | source[offset + 2] << 8 | source[offset + 3];

    }

}