What does mod mean in java

The mod operator (%) in Java is used to find the remainder. It returns the remainder of the dividend divided by the divisor. For example, 10 % 3 = 1 means that the remainder when 10 is divided by 3 is 1. This operator can be used to find remainders, check parity, control loops, and encryption algorithms.

The mod operator in Java

What is the mod operator?

The mod operator (%) is used to find remainder in Java. It takes two integer values ​​as input and returns the remainder after dividing the dividend by the divisor.

How the mod operator works

Suppose we have two integer values ​​​​a and b, then a % b is calculated as follows:

1. If a is a multiple of b, the remainder is 0.
2. If a is not a multiple of b, the remainder is equal to the remainder of a divided by b.

Example

For example, the following code calculates the remainder when 10 is divided by 3:

int a = 10;
int b = 3;
int remainder = a % b;
System.out.println(remainder); // 输出：1

Application scenario

The mod operator is used in various scenarios, such as:

• Finding the remainder, such as calculating the conversion of minutes into hours.
• Check whether the number is odd or even (the remainder for odd numbers is 1, and the remainder for even numbers is 0).
• Loop control, for example, in a for loop, the mod operator can be used to control the number of loops.
• Encryption and hashing algorithms, such as modular exponentiation.

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