The remainder of the quotient of two numbers (usually integers).
Questions tagged [modulus]
847 questions
8
votes
3 answers
Insert tr after every third loop
I'm making a forum in PHP. I have to display all forum categories in a table, and to do so, I have used a while loop. However, I want to have only 3 td's in every table row. To loop through the categories, I'm using a while loop with the query, so I…
user1169875
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8
votes
1 answer
Why is 4 % -8 equal to 4?
In Java,
4 % -8
is giving 4 as an output and not
-4
as expected by me.
Sourav
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8
votes
3 answers
Using mod operator in iOS app
I have an NSTimeInterval that is stored as a double. I would like to get the amount of minutes that are inide of the second value using the % operator.
minutes = secondValue % 60;
where minutes is declared as double minutes
The result is that XCode…
Jerry
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8
votes
2 answers
Modulus Query in Django using F()
I want to filter for Django objects such that their "id modulo K == N" .
Here's a way to do it in python, but I want it in the filter():
for foo in Foo.objects.all():
if foo.id % K == N:
print foo
So, I can use extra() with a query like…
Jeff Hoye
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8
votes
7 answers
Need an efficient subtraction algorithm modulo a number
For given numbers x,y and n, I would like to calculate x-y mod n in C. Look at this example:
int substract_modulu(int x, int y, int n)
{
return (x-y) % n;
}
As long as x>y, we are fine. In the other case, however, the modulu operation is…
Johannes
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7
votes
3 answers
How does modulus work and why is it different in Python than most languages?
Below is some code in C++. If you try something like -2%5 in python the result is positive 3 while many other languages like c++ C# (code) and flash give -2
Why do they give -2 and is one version more correct than the other?
#include
int…
user34537
7
votes
3 answers
Is it possible to get both the modulus and quotient of division in a single operation in C++?
I hear that when the processor does / or %, it will perform the same operation but one way it returns the quotient, the other way the remainder.
Is it possible to get both in a single operation? Maybe if I throw in a snippet of assembly code (which…
mczarnek
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7
votes
1 answer
Continuous Subarray sum
I came across this problem on Leetcode I saw the solution but I am unable to understand why it works. What property of modulus does it apply?
How can we say that we have found a subarray with sum equal to k just by looking at the previous occurence…
Prasad Madhale
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7
votes
7 answers
Finding Primes with Modulo in Python
I have been sweating over this piece of code -- which returns all the primes in a list:
primes = range(2, 20)
for i in range(2, 8):
primes = filter(lambda x: x == i or x % i, primes)
print primes
It works... but I don't understand the role…
fra
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7
votes
1 answer
How to use spiderable with a meteor app hosted on modulus.io
I'm trying to make spiderable works on my meteor app hosted on modulus with SSL.
I have Meteor 1.0, iron:router 1.0, spiderable and node package of phantomjs
All is working on localhost. But once I deploy on Modulus, first I had the…
Jean-Noël
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7
votes
4 answers
Add div after every 3d element twig loop, modulus
Hi so i have this twig loop, and what i need to to is after every 3rd element to add some html to close div row and open new one.
I tried with various snippets from this website but no luck with any one of them
{% for date,…
Alex
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7
votes
4 answers
What is the best function or method for computing modulus (Remainder of $a divided by $b) in PHP?
PHP provides different functions for computing modulus:
Modulus operator %: echo ($a % $b);
fmod()
bcmod()
gmp_mod()
Which function should be used that considered safe and efficient? considering the (devision by zero issue that described here:…
user1646111
7
votes
1 answer
Mod Syntax in Clojure
How do I write modulus syntax in programming language clojure?
For example the symbols money %= money_value.
user1585646
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7
votes
5 answers
how to calculate reverse modulus
now I have one formula:
int a = 53, x = 53, length = 62, result;
result = (a + x) % length;
but how to calculate reverse modulus to get the smallest "x" if I known result already
(53 + x) % 62 = 44
//how to get x
i mean what's the formula or logic…
Ivan Li
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6
votes
2 answers
Python Modulus Giving String Formatting Errors
I'm trying to perform the modulus of a value in python, but I'm getting errors as it's interpretting the modulus as a string formatting constant, from my knowledge. My initial guess would be to type cast this, but then it hangs.
val =…
r36363
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