How to generate negative random numbers in Golang?

To generate negative random numbers in Go, you need to use the math/rand package. The specific method is: single negative random number: randomNumber = -1 * rand.Float64() negative random number sequence: randomNumber = -10 + rand.Intn( 10)

How to generate negative random numbers in Golang?

Generating negative random numbers in Golang requires the math/rand package. This package provides functions for generating random numbers and pseudo-random sequences.

Generate a single negative random number

To generate a negative random number in the range -1 to 0, you can use the following code:

import (
    "math/rand"
    "time"
)

func main() {
    // 设置随机数种子
    rand.Seed(time.Now().UnixNano())

    // 生成一个范围在 -1 到 0 之间的随机数
    randomNumber := -1 * rand.Float64()

    // 打印随机数
    fmt.Println(randomNumber)
}

Generate a sequence of negative random numbers

To generate a sequence of negative random numbers, you can use rand.Intn from the math/rand package function or rand.Float64 function. For example, to generate 10 negative random numbers in the range -10 to 0, you would use the following code:

import (
    "math/rand"
    "time"
)

func main() {
    // 设置随机数种子
    rand.Seed(time.Now().UnixNano())

    // 生成 10 个范围在 -10 到 0 之间的随机数
    for i := 0; i < 10; i++ {
        randomNumber := -10 + rand.Intn(10)
        fmt.Println(randomNumber)
    }
}

The above code will generate 10 random numbers and print them to the console.

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