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What does mod mean in java

May 08, 2024 am 07:12 AM

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.

What does mod mean in java

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
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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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