How to find remainder in Go language

How to find the remainder in Go language: 1. Use the "%" operator to calculate the remainder of two numbers. This operator will return the remainder of the division operation; 2. You can use the "Mod" in the math package " function to calculate the remainder of two floating point numbers; 3. You can use a bit mask to calculate the remainder of a number "power of 2".

The operating environment of this article: Windows 10 system, go1.20 version, DELL G3 computer.

Go language is a statically typed, compiled language developed by Google. It has an easy-to-understand syntax and a high degree of concurrency, making it ideal for developing modern applications. In this article, we will explore the method of finding remainder in Go language.

In the Go language, we can use the % operator to calculate the remainder of two numbers. This operator returns the remainder of the division operation. For example, we can calculate the remainder of 10 divided by 3 by the following code:

package main
import "fmt"
func main() {
var dividend = 10
var divisor = 3
remainder := dividend % divisor
fmt.Printf("The remainder is: %d\n", remainder)
}

Running the above program, you will get the following output:

The remainder is: 1

As shown in the above example, we can use the % operation operator to calculate the remainder and store it in a variable. This allows us to use the variable elsewhere in the program.

In addition to the basic remainder operations, the Go language also provides some other functions related to remainders.

For example, we can use the Mod function in the math package to calculate the remainder of two floating point numbers. The following is an example:

package main
import (
"fmt"
"math"
)
func main() {
var dividend = 10.5
var divisor = 3.2
remainder := math.Mod(dividend, divisor)
fmt.Printf("The remainder is: %f\n", remainder)
}

Run the above program, you will get the following output:

The remainder is: 1.100000

In this example, we use the Mod function in the math package to calculate the remainder of 10.5 divided by 3.2, and store it in a variable. Note that the result returned is a floating point number.

In addition to using the % operator and the Mod function in the math package to calculate the remainder, we can also use bit operations to implement some special remainder functions.

For example, we can use a bit mask to calculate the remainder of a number raised to a power of 2. The following is an example:

package main
import "fmt"
func main() {
var num = 18
var power = 4
remainder := num & (1<<power - 1)
fmt.Printf("The remainder is: %d\n", remainder)
}

Run the above program, you will get the following output:

The remainder is: 2

In this example, we use the bitwise operators & and << to calculate 18 divided by 2 The remainder to the fourth power of . This is a relatively complex method, but may sometimes be useful in special situations.

To summarize, in Go language, we can use the % operator, the Mod function in the math package, or bit operations to calculate the remainder. These methods have different uses and effects in different scenarios. No matter which method you use, the powerful features and concise syntax of the Go language will help you easily perform remainder calculations

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