Day 2

day02/common/round.go

@@ -0,0 +1,47 @@
+package common
+
+type Move int
+
+const (
+  Rock Move = iota
+  Paper
+  Scissor
+)
+
+type Round struct {
+  Opponent Move
+  Response Move
+}
+
+func (round Round) GetScore() int {
+  score := 0
+  switch round {
+    case Round{Rock, Rock}:
+      score += 4
+    case Round{Rock, Paper}:
+      score += 8
+    case Round{Rock, Scissor}:
+      score += 3
+    case Round{Paper, Rock}:
+      score += 1
+    case Round{Paper, Paper}:
+      score += 5
+    case Round{Paper, Scissor}:
+      score += 9
+    case Round{Scissor, Rock}:
+      score += 7
+    case Round{Scissor, Paper}:
+      score += 2
+    case Round{Scissor, Scissor}:
+      score += 6
+  }
+  return score
+}
+
+func GetTotalScore(rounds []Round) int {
+  score := 0
+  for _, round := range rounds {
+    score += round.GetScore()
+  }
+  return score
+}