I have a string containing cards from ace of hearts to 10 of hearts via unicode (the exercise requires using a string, so no arrays or slices) Given a number n I have to extract n cards from this string. How do I do this if with the for-range I get fewer bits than I need?
package main
import (
"fmt"
"math/rand"
"strconv"
"strings"
"time"
)
func main() {
var n int
var deck string
rand.Seed(int64(time.Now().Nanosecond()))
n = readNumber()
deck = deckGenerator()
drawCards(deck, n)
}
func readNumber() (n int) {
for n <= 0 || n >= 10 {
fmt.Print("Enter number between 1 and 9: ")
fmt.Scan(&n)
}
return n
}
func deckGenerator() (deck string) {
for i := 0; i < 10; i++ {
deck += strconv.Itoa('\U0001F0B1' + i)
}
return deck
}
func drawCards(deck string, n int) {
for i := 0; i < n; i++ {
cardPulledOut, deck2 := drawCard(deck)
fmt.Println("Pulled out the card", cardPulledOut, "- Cards left in the deck:", deck2)
}
}
func drawCard(deck string) (cardPulledOut rune, deck2 string) {
for true {
card := rune(('\U0001F0B1') + rand.Intn(10)) //random number between 0 and 9 inclusive
for _, v := range deck {
fmt.Println(v, card)
/*
output: (infinity loop)
...
49 127156
53 127156
56 127156
...
*/
if v == card {
deck = strings.Replace(deck, string(card), "", 1)
return cardPulledOut, deck2
}
}
}
return
}
Your population function has a bug:
func deckGenerator() (deck string) {
for i := 0; i < 10; i++ {
// deck += strconv.Itoa('\U0001F0B1' + i) // converts integers to their string equivalent e.g. "127156"
deck += string(rune('\U0001F0B1' + i)) // fix
}
return deck
}