## Resolved: Left rotate number by N bits

In this post, we will see how to resolve Left rotate number by N bits Question: Suppose I have this number eg: 11 which in base 2 is represented as : 1011 . I want to left rotate by N ...

## Resolved: How to multiply a number by 42 in 8086 assembly without using MUL or DIV and in 5 lines?

In this post, we will see how to resolve How to multiply a number by 42 in 8086 assembly without using MUL or DIV and in 5 lines? Question: I have this problem where I am asked to multiply BX ...

## Resolved: c++ left shift operator used inside array declaration

In this post, we will see how to resolve c++ left shift operator used inside array declaration Question: I found this array declaration in open source software. It reads data from csv files, compares the tuples, and outputs the best tuples. ...

## Resolved: Calculate circular shift pairs in a list

In this post, we will see how to resolve Calculate circular shift pairs in a list Question: A circular shift moves some of the digits in a number to the beginning of the number, and shifts all other digits forward ...

## Solved: What are bitwise shift (bit-shift) operators and how do they work?

Question: I’ve been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators)… At a core level, what does bit-shifting (<<, >>, >>>) do, what problems can ...

## Resolved: Shift Left Operator Different Behavior

Question: What is the difference between the following 2 pieces of code? and The first gives me 4 while the latter gives me 12. How is represented by the compiler. I am using an old GCC v 5.3 but I ...

## Resolved: What is the purpose of this code in IdentityHashMap.hash()?

Question: From: jdk/IdentityHashMap.java at jdk8-b120 · openjdk/jdk · GitHub In theory, the hash values returned by System.identityHashCode() are already uniformly distributed, so why is there an additional shift operation instead of a direct AND operation with length - 1? The ...

## Resolved: ARM7 assembly shifting a number with a signed integer

Question: I have been trying to shift my number with the formula m*2^-n by using Logical Shift Right (LSR). for m = 8 and n=-2 I should be getting 8(2)^-2 ie; 2, but I get 0 for some unknown reason. ...