From cb3658c656680fea9c347d22b9830922c17da78a Mon Sep 17 00:00:00 2001
From: Yaroslav220890 <126674531+Yaroslav220890@users.noreply.github.com>
Date: Fri, 26 Jan 2024 12:17:41 +0200
Subject: [PATCH] solution

---
 src/arrayMethodJoin.js | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 3a62201c..4beb322c 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -3,9 +3,22 @@
 /**
  * Implement method join
  */
+
 function applyCustomJoin() {
-  [].__proto__.join2 = function(separator) {
-    // write code here
+  [].__proto__.join2 = function(separator = ',') {
+    let string = '';
+
+    for (let i = 0; i < this.length; i++) {
+      if (this[i] !== null && this[i] !== undefined) {
+        string += this[i];
+      }
+
+      if (i !== this.length - 1) {
+        string += separator;
+      }
+    }
+
+    return string;
   };
 }