fix: typo

luzhipeng · luzhipeng · commit 6b7b6f9f1c1d · 2019-04-24T15:02:41.000+08:00
diff --git a/problems/279.perfect-squares.md b/problems/279.perfect-squares.md
@@ -117,29 +117,6 @@ for (let i = 1; i <= n; i++) {
  * Output: 2
  * Explanation: 13 = 4 + 9.
  */
-
-const mapper = {};
-
-function d(n, level) {
-  if (n === 0) return level;
-
-  let i = 1;
-  const arr = [];
-
-  while (n - i * i >= 0) {
-    const hit = mapper[n - i * i];
-    if (hit) {
-      arr.push(hit + level);
-    } else {
-      const depth = d(n - i * i, level + 1) - level;
-      mapper[n - i * i] = depth;
-      arr.push(depth + level);
-    }
-    i++;
-  }
-
-  return Math.min(...arr);
-}
 /**
  * @param {number} n
  * @return {number}
