When I use bitwise and operator(&) with the number of 1 to find out if a number x is odd or even (x & 1), does the interpreter change the binary representation of 1 according to the binary representation of x? For example: 2 & 1 -> 10 & 01 -> then perform comparison bitwise 5 & 1 -&g…
Tag: bit-manipulation
Randomly Generate bitstrings with fixed sum
I would like to generate a set of randomly generated bit strings with a certain length N, but I would like to ensure that the sum of each bit string adds up to a certain number, say $k$. How would I go about doing this in Python without generating all possible bit strings and removing ones that don’t ad…
Infinite loop while adding two integers using bitwise operations?
I am trying to solve a problem, using python code, which requires me to add two integers without the use of ‘+’ or ‘-‘ operators. I have the following code which works perfectly for two positive numbers: This piece of code works perfectly if the input is two positive integers or two ne…
How To Mask Out Lower ‘x’ Bits of Python Integer Of Unknown Size
I am looking for a way to mask out (set to ‘0’) the lowest four bits of an integer in Python when I don’t know the total length of the number. If I knew the length of the integer beforehand I could just set the rest of the mask to 0xff, for instance if the integer would always be 32