diff --git a/src/arrayMethodSort.js b/src/arrayMethodSort.js
index 32363d0d..7bcb9b4e 100644
--- a/src/arrayMethodSort.js
+++ b/src/arrayMethodSort.js
@@ -1,12 +1,35 @@
-'use strict';
+"use strict";
 
 /**
  * Implement method Sort
  */
 function applyCustomSort() {
-  [].__proto__.sort2 = function(compareFunction) {
+  [].__proto__.sort2 = function (compareFunction) {
     // write code here
+    const callback =
+      typeof compareFunction === "function"
+        ? compareFunction
+        : (a, b) =>
+            String(a).localeCompare(String(b), undefined, {
+              sensitivity: "case",
+            });
+
+    for (let i = this.length - 1; i > 0; i--) {
+      for (let j = 0; j < i; j++) {
+        if (callback(this[j], this[i]) > 0) {
+          swap(this, i, j);
+        }
+      }
+    }
+
+    return this;
   };
 }
 
+function swap(arr, firstElementIndex, secondElementIndex) {
+  const tempPlaceHolder = arr[firstElementIndex];
+  arr[firstElementIndex] = arr[secondElementIndex];
+  arr[secondElementIndex] = tempPlaceHolder;
+}
+
 module.exports = applyCustomSort;