How do you randomly zero a bit in an integer?

Question

Updated with newer answer and better test

Let\'s say I have the number 382 which is 101111110.

How could I randomly turn a bit which is not 0 to

Answer 1

Try the following code

public static int ChangeOneBit(int data)
{
    if (data == 0)
    {
        return data;
    }

    var random = new Random();
    int bit = 0;
    do
    {
        var shift = random.Next(31);
        bit = data >> shift;
        bit = bit & 0x00000001;
    } while (bit == 0);
    var ret = data & (~(1 << bit));
    return ret;
}