#18 23.08.31 > 4 > 좋은 단어

src/bj/silver/4/3986.js

@@ -0,0 +1,32 @@
+"use strict";
+
+/**
+ * [stack, 수식의 괄호쌍 문제]
+ */
+
+const [N, ...arr] = require("fs")
+  .readFileSync("/dev/stdin")
+  .toString()
+  .trim()
+  .split("\n");
+
+const solution = (N, arr) => {
+  let answer = 0;
+
+  for (let i = 0; i < N; i++) {
+    const stack = [];
+    const str = arr[i].split("");
+
+    for (let j = 0; j < str.length; j++) {
+      const top = stack[stack.length - 1];
+      const now = str[j];
+      if (top === now) stack.pop();
+      else stack.push(now);
+    }
+
+    answer = stack.length ? answer : answer + 1;
+  }
+  return answer;
+};
+
+console.log(solution(+N, arr));

src/bj/silver/4/README.md

@@ -39,3 +39,4 @@
 | 35  |  10825   | [국영수](./10825.js)                     | 23.06.06  |     △     |
 | 36  |   2870   | [수학숙제](./2870.js)                    | 23.06.11  |     △     |
 | 37  |   2847   | [게임을 만든 동준이](./2847.js)          | 23.06.12  |     X     |
+| 38  |   3986   | [좋은 단어](./3986.js)                   | 23.08.31  |     O     |