74회차 2번 제출

Author: egg-silver

live7/test74/문제2/이지은.js

@@ -0,0 +1,31 @@
+const input = require('fs')
+  .readFileSync(process.platform === 'linux' ? '/dev/stdin' : './input.txt')
+  .toString()
+  .trim()
+  .split('\n')
+  .map(Number);
+
+function solution(input) {
+  const result = [];
+  for (let i = 0; i < input.length; i++) {
+    let n = 3 ** input[i];
+    let str = '-';
+    let arr = str.repeat(n);
+
+    function three(arr) {
+      if (arr.length === 1) {
+        return str;
+      }
+
+      let size = arr.length / 3;
+      const forward = three(arr.slice(0, size));
+      const backward = three(arr.slice(size * 2));
+
+      return forward + ' '.repeat(size) + backward;
+    }
+    result.push(three(arr));
+  }
+  return result.join('\n');
+}
+
+console.log(solution(input));