위장문제 map으로 구현

grap3fruit · grap3fruit · commit b83a89af6b2f · 2021-01-05T21:49:28.000+09:00
diff --git a/src/grap3fruit/js/goorm/42578_2.js b/src/grap3fruit/js/goorm/42578_2.js
@@ -0,0 +1,29 @@
+function solution(clothes) {
+  let answer = 1;
+  console.log(clothes);
+
+  const map = new Map();
+
+  clothes.forEach((cloth) => {
+    if (!map.get(cloth[1])) {
+      return map.set(cloth[1], [cloth[0]]);
+    }
+
+    map.get(cloth[1]).push(cloth[0]);
+  });
+
+  for (let key of map.keys()) {
+    answer *= map.get(key).length + 1;
+  }
+  answer -= 1;
+
+  return answer;
+}
+
+const clothes = [
+  ['yellow_hat', 'headgear'],
+  ['blue_sunglasses', 'eyewear'],
+  ['green_turban', 'headgear'],
+];
+
+console.log(solution(clothes));
