02_1

day02/index.js

@@ -0,0 +1,82 @@
+import { readFileSync } from "fs";
+
+const input = readFileSync("rps.txt", "utf-8");
+
+let totalScore = 0;
+
+// A X rock 1
+// B Y paper 2
+// C Z scissors 3
+
+// lose 0
+// draw 3
+// win 6
+
+input.split("\n").forEach(line => {
+    const arr = line.split(" ");
+
+    totalScore += getScore(arr[0], arr[1]);
+});
+
+console.log(totalScore);
+
+function getScore(opponent, player) {
+    let score = 0;
+
+    switch(player) {
+        case "X":
+            score += 1;
+            break;
+        case "Y":
+            score += 2;
+            break;
+        case "Z":
+            score += 3;
+            break;
+        
+    }
+
+    switch(opponent) {
+        case "A":
+            switch(player) {
+                case "X":
+                    score += 3;
+                    break;
+                case "Y":
+                    score += 6;
+                    break;
+                case "Z":
+                    score += 0;
+                    break;
+            }
+            break;
+        case "B":
+            switch(player) {
+                case "X":
+                    score += 0;
+                    break;
+                case "Y":
+                    score += 3;
+                    break;
+                case "Z":
+                    score += 6;
+                    break;
+            }
+            break;
+        case "C":
+            switch(player) {
+                case "X":
+                    score += 6;
+                    break;
+                case "Y":
+                    score += 0;
+                    break;
+                case "Z":
+                    score += 3;
+                    break;
+            }
+            break;
+    }
+
+    return score;
+}