Question

How to generate random floating point numbers in Go

Answer 1

package main

import (
    "fmt"
    "math/rand"
    "time"
)

// generateRandomNumbers returns a slice of n random float64 numbers in [lower, upper]
func generateRandomNumbers(n int, lower, upper float64) []float64 {
    rand.Seed(time.Now().UnixNano())
    
    numbers := make([]float64, n)
    
    for i := 0; i < n; i++ {
        num := lower + rand.Float64()*(upper-lower)
        numbers[i] = num
    }
    
    return numbers
}

func main() {
    n := 10
    lower := 0.0
    upper := 3.0

    randomNumbers := generateRandomNumbers(n, lower, upper)

    for _, num := range randomNumbers {
        fmt.Printf("%.6f ", num)
    }
}



/*
run:

2.534125 2.164375 2.362431 0.504035 1.011613 1.563162 1.682456 2.634073 2.146579 0.046943 

*/

 

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