get a sample of 5 elements from an array in go

To get a sample of 5 elements from an array in Go, you can use the math/rand package to generate 5 random indices and then select the values at those indices from the array.

Here's an example code snippet:

main.go
package main

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

func main() {
    // Seed the random number generator with the current time
    rand.Seed(time.Now().Unix())

    array := [10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
    sample := make([]int, 5)

    for i := 0; i < 5; i++ {
        randIndex := rand.Intn(len(array))
        sample[i] = array[randIndex]
    }

    fmt.Println("Sample:", sample)
}
408 chars
23 lines

In this example, we create an array of 10 integers and a slice of integers to hold our sample of 5 elements. We then loop 5 times, generating a random index within the bounds of the array and selecting the value at that index to add to our sample. Finally, we print out the resulting sample.