How to convert an int that is negative to a binary string reprezentation?

Question

I know that to convert a number to a binary string is necessary to check the rest of the division of the number by 2 at each iteration, more precisely at each division by 2. For example:

public static string intToBinary(int n)
{
    String binary = "";
    while (n > 0)
    {
        binary =  ( (n % 2 ) == 0 ? "0" : "1") + binary;
        n = n / 2;
    }
    return binary;
}

If we had a negative number we would use the complementary code which would mean that the bits would be inverted and in the end 1 is added to the result.

In this case, how should it be done in the code to get the negative number in the binary?

Answer 1

Receive the sacred gifts offered by the Integer class. It offers a method that can convert an int to its binary string representation: Integer.toBinaryString(int i) .