From dbcaae0140a8b79026f03ac060fbeafe578df36f Mon Sep 17 00:00:00 2001
From: Artem <139005232+CyborgNinjaHat@users.noreply.github.com>
Date: Tue, 14 Apr 2026 11:39:08 +0000
Subject: [PATCH 1/3] feat: implement custom sort method

---
 src/arrayMethodSort.js | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/arrayMethodSort.js b/src/arrayMethodSort.js
index 32363d0d..89e05753 100644
--- a/src/arrayMethodSort.js
+++ b/src/arrayMethodSort.js
@@ -4,8 +4,20 @@
  * Implement method Sort
  */
 function applyCustomSort() {
-  [].__proto__.sort2 = function(compareFunction) {
-    // write code here
+  [].__proto__.sort2 = function (compareFunction) {
+    const compare = compareFunction
+      ? (a, b) => compareFunction(a, b) > 0
+      : (a, b) => String(a) > String(b);
+
+    for (let i = 0; i < this.length; i++) {
+      for (let j = 0; j < this.length - i - 1; j++) {
+        if (compare(this[j], this[j + 1])) {
+          [this[j], this[j + 1]] = [this[j + 1], this[j]];
+        }
+      }
+    }
+
+    return this;
   };
 }
 

From 7667085ddb8a49f8af5ae5cd642d43a4b609671b Mon Sep 17 00:00:00 2001
From: Artem <139005232+CyborgNinjaHat@users.noreply.github.com>
Date: Tue, 14 Apr 2026 12:02:32 +0000
Subject: [PATCH 2/3] fix: add validation for compareFunction

---
 src/arrayMethodSort.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/arrayMethodSort.js b/src/arrayMethodSort.js
index 89e05753..bdc095db 100644
--- a/src/arrayMethodSort.js
+++ b/src/arrayMethodSort.js
@@ -5,6 +5,13 @@
  */
 function applyCustomSort() {
   [].__proto__.sort2 = function (compareFunction) {
+    const isInvalidCompareFunction =
+      compareFunction !== undefined && typeof compareFunction !== 'function';
+
+    if (isInvalidCompareFunction) {
+      throw new TypeError('compareFunction must be a function');
+    }
+
     const compare = compareFunction
       ? (a, b) => compareFunction(a, b) > 0
       : (a, b) => String(a) > String(b);

From 94e3fda5914dcba24b1287c43560fef31a5ca4f3 Mon Sep 17 00:00:00 2001
From: Artem <139005232+CyborgNinjaHat@users.noreply.github.com>
Date: Wed, 15 Apr 2026 20:12:39 +0000
Subject: [PATCH 3/3] refactor: improve default comparison logic in custom sort
 method

---
 src/arrayMethodSort.js | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/src/arrayMethodSort.js b/src/arrayMethodSort.js
index bdc095db..e678a429 100644
--- a/src/arrayMethodSort.js
+++ b/src/arrayMethodSort.js
@@ -1,8 +1,20 @@
 'use strict';
 
-/**
- * Implement method Sort
- */
+function defaultCompare(a, b) {
+  const first = String(a);
+  const second = String(b);
+
+  if (first < second) {
+    return -1;
+  }
+
+  if (first > second) {
+    return 1;
+  }
+
+  return 0;
+}
+
 function applyCustomSort() {
   [].__proto__.sort2 = function (compareFunction) {
     const isInvalidCompareFunction =
@@ -12,13 +24,11 @@ function applyCustomSort() {
       throw new TypeError('compareFunction must be a function');
     }
 
-    const compare = compareFunction
-      ? (a, b) => compareFunction(a, b) > 0
-      : (a, b) => String(a) > String(b);
+    const compare = compareFunction ?? defaultCompare;
 
     for (let i = 0; i < this.length; i++) {
       for (let j = 0; j < this.length - i - 1; j++) {
-        if (compare(this[j], this[j + 1])) {
+        if (compare(this[j], this[j + 1]) > 0) {
           [this[j], this[j + 1]] = [this[j + 1], this[j]];
         }
       }