コード例 #1
0
        public static string ConvertDecimalToBinary(int decimalNumber)
        {
            bool isNegative = decimalNumber < 0;

            decimalNumber = Math.Abs(decimalNumber);

            StringBuilder sb = new StringBuilder();

            // decimal to binary:
            // 5 = 5 / 2 = 2 reminder 1;
            // 2 / 2 = 1 reminder 0;
            // 1 / 2 = 0 reminder 1 = 101 (reversed);
            while (decimalNumber != 0)
            {
                sb.Append(decimalNumber % 2);
                decimalNumber = decimalNumber / 2;
            }

            string result = ExtensionMethods.ReverseString(sb.ToString());

            if (isNegative)
            {
                result = ExtensionMethods.InvertBinaryNumber(result, NumberOfBits);
                result = ExtensionMethods.AddBinaryNumbers(result, "1", NumberOfBits);
            }

            return(result);
        }