What is a modulo?

Question

In java, it says that the symbol % is a modulo. What is that, what are its uses?

Answer 1

https://www.sololearn.com/discuss/256018/?ref=app
https://www.sololearn.com/discuss/367677/?ref=app
https://www.sololearn.com/discuss/198491/?ref=app
https://www.sololearn.com/discuss/2236776/?ref=app

Answer 2

Modulo Operator is one of the fundamental operators in Java. It's a binary operator. it requires two operands. In a division operation, the remainder is returned by using modulo operator. It is denoted by % (percentage) sign. For example 5%2 will return 1 because if you divide 5 with 2, the remainder will be 1.

Answer 3

An example:

33 / 5 = 6, with a remainder of 3.
Therefor 33 % 5 = 3.

Modulo is used pretty much everywhere (just like + and -), it's hard to narrow down usecases. You should be pretty familiar with modular arithmetic already, from telling time:

It's 5am now, how late is it in 8 hours? It's 1. Which is just (5+8)%12.

I like to visualize modular calculations as wrapping the number line around a circle and reading results off that, much like an analog clock.