## Resolved: Bitwise right shift operator >> didn’t worked as intended

Question: I am writing a code to find the number of ones in binary representation of a number here is the code: Above code gives an endless loop and tNum didn’t change its value I didn’t understand where I am ...

## Resolved: Bitwise operators in JavaScript as flags on a state

Question: I am trying to install some logic into a piece of JS I am working on that will simply add/remove flags depending on some conditions. It primarily consists of two steps Build object based on some stateful data Hand ...

## Resolved: Cast bit(64) to boolean in Postgres

Question: I know you can cast an int8 to a boolean like so: Now I’m trying to cast an int8 to a bit(64), AND that with a bit(64) mask, and then evaluate the entire expression as a boolean (ie. true ...

## Resolved: Choose an element from array to maximize sum after XOR all elements in array

Question: You are given an array A. You have to choose an element from this array say A[k] and form a new array B such that B[i] = A[i]^A[k]. (^ means bitwise XOR). Now the score of the array would ...

## Resolved: Why the sequence from the bitwise operator(~) would be this? Is that broken?

Question: /the out come should be 155 ,isn’t it?/ Answer: According to the standard, the operand of ~ will undergo integral promotion. So here we will first promote a to int. [expr.unary.op]: The operand of ~ shall have integral or ...

## Resolved: Remove subset rows of other rows in SQL

Question: I’ve this table below that includes ID, and five indicator columns: x1, …, x5: I need to remove duplicates based on this logic: For each ID, we look at the values of x1, …, x5, and we remove the ...

## Resolved: When to use the bitwise and operator (&)? [duplicate]

Question: I understand that the bitwise and operator (&) is equivalent to a product of two bit values. When would I use it? Please also help me understand what num&1 does in the code below: Answer: As the comments mentioned, ...