/
person.go
78 lines (63 loc) · 1.52 KB
/
person.go
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package pizzameeting
import (
"math"
)
const minScore = 10
const maxScore = 2*minScore - 1
const repeatPenaltyFactor = 0.66 // Each repetition will multiply the score by this value. The closer to one, the smaller the penalty.
type Attendee interface {
Evaluate([]Pizza) int
}
type Pizza string
type Score struct {
pizza Pizza
score int
}
type Person struct {
Id Identifier `json:"-"`
Name string
scores map[Pizza]int
scoresSlice []Score
}
func (p *Person) Score(pizza Pizza, score int) {
if p.scores == nil {
p.scores = make(map[Pizza]int)
}
p.scores[pizza] = score
p.scoresSlice = append(p.scoresSlice, Score{pizza, score})
}
func (p *Person) pizzaScore(pizza Pizza) int {
if len(p.scoresSlice) < 16 {
for _, score := range p.scoresSlice {
if score.pizza == pizza {
return score.score
}
}
return 0
} else {
return p.scores[pizza]
}
}
func (p *Person) Evaluate(menu []Pizza) int {
score := 0.0
//repeatPenalties := make(map[Pizza]float32, len(menu))
penalized := make([]Pizza, 0, len(menu))
for _, pizza := range menu {
score += float64(p.scores[pizza]) * penalty(pizza, penalized)
penalized = append(penalized, pizza)
}
if len(p.scores) >= 2 {
return int(math.Round(score - minScore*(1+repeatPenaltyFactor)))
} else {
return int(math.Round(score)) - (minScore - 1)
}
}
func penalty(pizza Pizza, penalties []Pizza) float64 {
factor := 1.0
for _, penalizedPizza := range penalties {
if penalizedPizza == pizza {
factor *= repeatPenaltyFactor
}
}
return factor
}