Question

How to initialize char array with random characters in Go

Answer 1

package main

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

const (
    Size       = 10 // Size of the array
    Characters = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
)

func initializeCharArrayWithRandomCharacters(arr []byte) {
    rand.Seed(time.Now().UnixNano()) // Seed the random number generator
    for i := range arr {
        arr[i] = Characters[rand.Intn(len(Characters))]
    }
}

func main() {
    // Create a byte slice with a fixed size
    arr := make([]byte, Size)

    // Fill the slice with random characters
    initializeCharArrayWithRandomCharacters(arr)
    
    for _, ch := range arr {
        fmt.Printf("%c ", ch) 
    }
}


/*
run:

K v i D o 1 U R f v 

*/

 

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