diff --git a/src/arrayMethodSort.js b/src/arrayMethodSort.js
index 32363d0d..2499f478 100644
--- a/src/arrayMethodSort.js
+++ b/src/arrayMethodSort.js
@@ -4,9 +4,36 @@
  * Implement method Sort
  */
 function applyCustomSort() {
-  [].__proto__.sort2 = function(compareFunction) {
-    // write code here
+  [].__proto__.sort2 = function (compareFunction) {
+    if (
+      compareFunction !== undefined &&
+      typeof compareFunction !== 'function'
+    ) {
+      throw new TypeError(
+        'The comparison function must be either a function or undefined',
+      );
+    }
+
+    for (let i = 0; i < this.length; i++) {
+      for (let o = 0; o < this.length - 1 - i; o++) {
+        let shouldSwap;
+
+        if (typeof compareFunction === 'function') {
+          shouldSwap = compareFunction(this[o], this[o + 1]) > 0;
+        } else {
+          shouldSwap = String(this[o]) > String(this[o + 1]);
+        }
+
+        if (shouldSwap) {
+          [this[o], this[o + 1]] = [this[o + 1], this[o]];
+        }
+      }
+    }
+
+    return this;
   };
+  /* eslint-disable-next-line no-extend-native */
+  Array.prototype.sort = [].__proto__.sort2;
 }
 
 module.exports = applyCustomSort;