From 7e3f72e22762d5ed02bae67701a95a60ef32afbb Mon Sep 17 00:00:00 2001
From: Mykyta Vyskrebentsev <nikitavyskrebentsev1@gmail.com>
Date: Mon, 14 Aug 2023 00:16:48 +0300
Subject: [PATCH] Solution

---
 src/arrayMethodJoin.js | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 3a62201c..081f4b36 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -4,8 +4,22 @@
  * Implement method join
  */
 function applyCustomJoin() {
-  [].__proto__.join2 = function(separator) {
-    // write code here
+  [].__proto__.join2 = function(separator = ',') {
+    let stringArray = '';
+
+    for (let i = 0; i < this.length; i++) {
+      const arrayElement = this[i];
+
+      if (arrayElement !== undefined && arrayElement !== null) {
+        stringArray += arrayElement;
+      }
+
+      if (i !== this.length - 1) {
+        stringArray += separator;
+      }
+    };
+
+    return stringArray;
   };
 }