99차 3번 문제풀이

Author: Eric

live9/test99/문제3/황장현.js

@@ -0,0 +1,28 @@
+function solution(s) {
+  const obj = {
+    '}': '{',
+    ']': '[',
+    ')': '(',
+  };
+
+  const isCorrect = (string) => {
+    const stack = [];
+    for (const char of string) {
+      if ('{[('.includes(char)) stack.push(char);
+      else if (obj[char] !== stack.pop()) return false;
+    }
+    return stack.length ? false : true;
+  };
+
+  const rotate = (string) => string.substringing(1) + string[0];
+
+  let result = 0;
+  for (let i = 0; i < s.length; i++) {
+    s = rotate(s);
+
+    result += isCorrect(s) ? 1 : 0;
+  }
+  return result;
+}
+
+console.log(solution('[](){}'));