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Contents
//Package yacht is a sample solution to the yacht exercise for go
package yacht
import (
"sort"
)
//scoreN calculates the score of the lower categories
//It returns the total of those dice that equal n
func scoreN(dice []int, n int) int {
score := 0
for _, d := range dice {
if d == n {
score += n
}
}
return score
}
//scoreAll adds up and returns the total of the five dice
func scoreAll(dice []int) int {
return dice[0] + dice[1] + dice[2] + dice[3] + dice[4]
}
var diceValueMap = map[string]int{
"ones": 1, "twos": 2, "threes": 3, "fours": 4, "fives": 5, "sixes": 6,
}
//Score returns the total score of a hand of Yacht dice in a given category.
func Score(dice []int, category string) int {
sort.Ints(dice)
switch category {
case "ones", "twos", "threes", "fours", "fives", "sixes":
return scoreN(dice, diceValueMap[category])
case "full house":
//Note, a yacht scores zero as a full house
if dice[0] == dice[1] && dice[2] == dice[3] && dice[3] == dice[4] && dice[1] != dice[2] {
return scoreAll(dice)
}
if dice[0] == dice[1] && dice[1] == dice[2] && dice[3] == dice[4] && dice[2] != dice[3] {
return scoreAll(dice)
}
return 0
case "four of a kind":
//Note, a yacht can score as four of a kind, but only 4 dice are counted
if dice[0] == dice[1] && dice[1] == dice[2] && dice[2] == dice[3] {
return dice[0] * 4
}
if dice[1] == dice[2] && dice[2] == dice[3] && dice[3] == dice[4] {
return dice[1] * 4
}
return 0
case "little straight":
if dice[0] == 1 && dice[1] == 2 && dice[2] == 3 && dice[3] == 4 && dice[4] == 5 {
return 30
}
return 0
case "big straight":
if dice[0] == 2 && dice[1] == 3 && dice[2] == 4 && dice[3] == 5 && dice[4] == 6 {
return 30
}
return 0
case "choice":
return scoreAll(dice)
case "yacht":
if dice[0] == dice[1] && dice[1] == dice[2] && dice[2] == dice[3] && dice[3] == dice[4] {
return 50
}
return 0
default:
//This can't happen, so panic is appropriate
panic("Unknown category")
}
}
Version data entries
63 entries across 63 versions & 1 rubygems