Penney's game: Difference between revisions
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Game over</pre>
=={{header|Vlang}}==
{{trans|Kotlin}}
<syntaxhighlight lang="vlang">
import rand
import os
import time
const optimum = {
"HHH": "THH", "HHT": "THH", "HTH": "HHT", "HTT": "HHT",
"THH": "TTH", "THT": "TTH", "TTH": "HTT", "TTT": "HTT"
}
fn main() {
r := rand.intn(2) or {exit(1)}
mut user_seq :=''
mut comp_seq :=''
mut coin :=''
mut coins :=''
mut len := 0
mut seq :=''
if r == 0 {
println("You go first")
user_seq = user_sequence()
println('\n')
comp_seq = computer_sequence(user_seq)
}
else {
println("Computer goes first")
comp_seq = computer_sequence(user_seq)
println('\n')
user_seq = user_sequence()
}
println('\n')
for true {
if (rand.intn(2) or {exit(1)}) == 0 {coin = 'H'} else {coin = 'T'}
coins += coin
println("Coins flipped: $coins")
len = coins.len
if len >= 3 {
seq = coins.substr(len - 3, len)
if seq == user_seq {
println("\nYou win!")
exit(0)
}
if seq == comp_seq {
println("\nComputer wins!")
exit(0)
}
}
time.sleep(1 * time.second)
}
}
fn user_sequence() string {
mut user_seq :=''
println("A sequence of three H or T should be entered")
for (user_seq.len != 3) || (user_seq.to_upper().split('').any(it != 'H' && it != 'T') == true) {
user_seq = os.input('Enter your sequence: ').str().to_upper()
}
return user_seq
}
fn computer_sequence(user_seq string) string {
mut char_array := []string{len:3}
mut comp_seq :=''
if user_seq == '' {
for _ in 0..2 {
if (rand.intn(2) or {exit(1)}) == 0 {char_array << 'T'} else {char_array << 'H'}
comp_seq = char_array.join('')
}
}
else {
comp_seq = optimum[user_seq]
}
println("Computer's sequence: $comp_seq")
return comp_seq
}
</syntaxhighlight>
{{out}}
<pre>
Computer goes first
Computer's sequence: TH
A sequence of three H or T should be entered
Enter your sequence: thh
Coins flipped: H
Coins flipped: HT
Coins flipped: HTT
Coins flipped: HTTH
Coins flipped: HTTHT
Coins flipped: HTTHTH
Coins flipped: HTTHTHT
Coins flipped: HTTHTHTT
Coins flipped: HTTHTHTTH
Coins flipped: HTTHTHTTHT
Coins flipped: HTTHTHTTHTH
Coins flipped: HTTHTHTTHTHT
Coins flipped: HTTHTHTTHTHTH
Coins flipped: HTTHTHTTHTHTHT
Coins flipped: HTTHTHTTHTHTHTH
Coins flipped: HTTHTHTTHTHTHTHH
You win!
</pre>
=={{header|Wren}}==
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