From 70b02837668c4b93ba18dff85585b5574696b466 Mon Sep 17 00:00:00 2001
From: shikoryak <oksanashykoriak@gmail.com>
Date: Fri, 25 Aug 2023 18:58:09 +0300
Subject: [PATCH 1/4] added solution task

---
 src/arrayMethodJoin.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 3a62201c..97ac995c 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -5,7 +5,16 @@
  */
 function applyCustomJoin() {
   [].__proto__.join2 = function(separator) {
-    // write code here
+    let result = '';
+    const readySeparator = separator !== undefined ? String(separator) : ',';
+
+    for (let i = 0; i < this.length; i++) {
+      const value = this[i] === undefined || this[i] === null ? '' : this[i];
+
+      result += i === 0 ? value : readySeparator + value;
+    }
+
+    return result;
   };
 }
 

From 1dafafcd17d8d7df9f0003d21a6c94d48d14f5dd Mon Sep 17 00:00:00 2001
From: shikoryak <oksanashykoriak@gmail.com>
Date: Mon, 4 Sep 2023 11:43:09 +0300
Subject: [PATCH 2/4] resolved comment

---
 src/arrayMethodJoin.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 97ac995c..ef132c20 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -9,9 +9,17 @@ function applyCustomJoin() {
     const readySeparator = separator !== undefined ? String(separator) : ',';
 
     for (let i = 0; i < this.length; i++) {
-      const value = this[i] === undefined || this[i] === null ? '' : this[i];
+      let value = this[i];
 
-      result += i === 0 ? value : readySeparator + value;
+      if (value === undefined || value === null) {
+        value = '';
+      }
+
+      if (i === 0) {
+        result += value;
+      } else {
+        result += readySeparator + value;
+      }
     }
 
     return result;

From 728fd231edb451ba8865184837229b957fdbdf32 Mon Sep 17 00:00:00 2001
From: shikoryak <oksanashykoriak@gmail.com>
Date: Mon, 4 Sep 2023 11:56:07 +0300
Subject: [PATCH 3/4] fixed the code

---
 src/arrayMethodJoin.js | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index ef132c20..29f2124e 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -9,16 +9,14 @@ function applyCustomJoin() {
     const readySeparator = separator !== undefined ? String(separator) : ',';
 
     for (let i = 0; i < this.length; i++) {
-      let value = this[i];
+      const value = this[i];
 
-      if (value === undefined || value === null) {
-        value = '';
+      if (value !== undefined && value !== null) {
+        result += value;
       }
 
-      if (i === 0) {
-        result += value;
-      } else {
-        result += readySeparator + value;
+      if (i !== this.length - 1) {
+        result += readySeparator;
       }
     }
 

From 3243be6fec75b38800f3fddc10e247f678517fd1 Mon Sep 17 00:00:00 2001
From: shikoryak <oksanashykoriak@gmail.com>
Date: Mon, 4 Sep 2023 15:31:48 +0300
Subject: [PATCH 4/4] some change

---
 src/arrayMethodJoin.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/arrayMethodJoin.js b/src/arrayMethodJoin.js
index 29f2124e..57048746 100644
--- a/src/arrayMethodJoin.js
+++ b/src/arrayMethodJoin.js
@@ -4,7 +4,7 @@
  * Implement method join
  */
 function applyCustomJoin() {
-  [].__proto__.join2 = function(separator) {
+  [].__proto__.join2 = function(separator = ',') {
     let result = '';
     const readySeparator = separator !== undefined ? String(separator) : ',';