modulo - w3toppers.com

JavaScript % (modulo) gives a negative result for negative numbers

Number.prototype.mod = function (n) { return ((this % n) + n) % n; }; Taken from this article: The JavaScript Modulo Bug

How Does Modulus Divison Work

Most explanations miss one important step, let’s fill the gap using another example. Given the following: Dividend: 16 Divisor: 6 The modulus function looks like this: 16 % 6 = 4 Let’s determine why this is. First, perform integer division, which is similar to normal division, except any fractional number (a.k.a. remainder) is discarded: 16 … Read more

How does a hash table work?

Here’s an explanation in layman’s terms. Let’s assume you want to fill up a library with books and not just stuff them in there, but you want to be able to easily find them again when you need them. So, you decide that if the person that wants to read a book knows the title … Read more

Modulo operation with negative numbers

C99 requires that when a/b is representable: (a/b) * b + a%b shall equal a This makes sense, logically. Right? Let’s see what this leads to: Example A. 5/(-3) is -1 => (-1) * (-3) + 5%(-3) = 5 This can only happen if 5%(-3) is 2. Example B. (-5)/3 is -1 => (-1) * … Read more

How to get the separate digits of an int number?

What is the result of % in Python?

The % (modulo) operator yields the remainder from the division of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equals 4*0.7 + 0.34.) The modulo operator … Read more

Why do people say there is modulo bias when using a random number generator?

So rand() is a pseudo-random number generator which chooses a natural number between 0 and RAND_MAX, which is a constant defined in cstdlib (see this article for a general overview on rand()). Now what happens if you want to generate a random number between say 0 and 2? For the sake of explanation, let’s say … Read more

logical OR in Java not working?

Before you do anything check for an empty List or a 0 divisor. if(divisor==0||array1.isEmpty()){ return false; } Then you can check the list. for(Integer i: array1){ if(i%divisor!=0){ return false; } } Finally. return true;

Modulo operator

The meaning of Mod is that you take the remainder after doing the division. 1 fits zero times in 4, so the remainder is 1. Here the wikipedia definition that explains in a little more detail: In mathematics the result of the modulo operation is the remainder of an arithmetic division. As is well known, … Read more

How do I get 4 instead of 4.0 in "Squirrels and nuts – 1" task? [closed]

To avoid a float result, use integer division: // instead of /.