go program to select Euromillions numbers

euromillions.go

package main

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

type euroMillions struct {
	Numbers    [5]int
	Luckystars [2]int
}

func (e *euroMillions) printDetails() {
	sort.Ints(e.Numbers[:])
	sort.Ints(e.Luckystars[:])
	fmt.Print("Numbers: ", e.Numbers)
	fmt.Println(", Lucky Stars: ", e.Luckystars)
}

func (e *euroMillions) luckyDip() {
	var possibleNumbers = make([]int, 50)
	for i := 0; i < len(possibleNumbers); i++ {
		possibleNumbers[i] = i + 1
	}
	for i := 0; i < len(e.Numbers); i++ {
		e.Numbers[i], possibleNumbers = chooseLotteryNumber(possibleNumbers)
	}
	possibleLuckystars := make([]int, 12)
	for i := 0; i < len(possibleLuckystars); i++ {
		possibleLuckystars[i] = i + 1
	}
	for i := 0; i < len(e.Luckystars); i++ {
		e.Luckystars[i], possibleLuckystars = chooseLotteryNumber(possibleLuckystars)
	}
}

func main() {
	rand.Seed(time.Now().UTC().UnixNano())
	lottery := euroMillions{}
	lottery.luckyDip()
	lottery.printDetails()
}

func chooseLotteryNumber(numbers []int) (int, []int) {
	index := rand.Intn(len(numbers) - 1)
	chosenNumber := numbers[index]
	return chosenNumber, removeIndex(numbers, index)
}

func removeIndex(slice []int, index int) []int {
	return append(slice[:index], slice[index+1:]...)
}