day 27 task complete

Author: Sanchitbajaj02

day27/leetcode2705.js

@@ -0,0 +1,42 @@
+// 2705. Compact Object
+// URL -> https://leetcode.com/problems/compact-object/
+
+/**
+ * @param {Object|Array} obj
+ * @return {Object|Array}
+ */
+var compactObject = function (obj) {
+  function dfs(obj) {
+    // no value check
+    if (!obj) return false
+
+    if (typeof obj !== 'object') return obj
+
+    // array check
+    if (Array.isArray(obj)) {
+      const newArr = [];
+      for (let item of obj) {
+        const subRes = dfs(item);
+        if (subRes) {
+          newArr.push(subRes);
+        }
+      }
+
+      return newArr;
+    }
+
+    // object check
+    const newObj = {};
+
+    for (const key in obj) {
+      const subRes = dfs(obj[key])
+      if (subRes) {
+        newObj[key] = subRes;
+      }
+    }
+
+    return newObj;
+  }
+
+  return dfs(obj);
+};