diff --git a/src/my_project/interviews/top_150_questions_round_23/ex_05_majority_element.py b/src/my_project/interviews/top_150_questions_round_23/ex_05_majority_element.py
new file mode 100644
index 00000000..63cc12d5
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_23/ex_05_majority_element.py
@@ -0,0 +1,20 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def majorityElement(self, nums: List[int]) -> int:
+
+        dic_answer = dict()
+        len_nums = len(nums)
+
+        for i in range(len_nums):
+
+            if nums[i] not in dic_answer:
+                dic_answer[nums[i]] = 1
+            else: 
+                dic_answer[nums[i]] += 1
+
+            if dic_answer[nums[i]] > len_nums//2:
+                return nums[i]
+            
+        return -1
\ No newline at end of file
diff --git a/src/my_project/interviews_typescript/top_150_questions_round_23/ex_05_majority_element.ts b/src/my_project/interviews_typescript/top_150_questions_round_23/ex_05_majority_element.ts
new file mode 100644
index 00000000..e7e9af41
--- /dev/null
+++ b/src/my_project/interviews_typescript/top_150_questions_round_23/ex_05_majority_element.ts
@@ -0,0 +1,14 @@
+function majorityElement(nums: number[]): number {
+    const dicAnswer: Map<number, number> = new Map();
+    const lenNums = nums.length;
+
+    for (let i = 0; i < lenNums; i++) {
+        dicAnswer.set(nums[i], (dicAnswer.get(nums[i]) ?? 0) + 1);
+
+        if (dicAnswer.get(nums[i])! > Math.floor(lenNums / 2)) {
+            return nums[i];
+        }
+    }
+
+    return -1;
+};
\ No newline at end of file
diff --git a/tests/test_150_questions_round_23/test_05_majority_element_round_23.py b/tests/test_150_questions_round_23/test_05_majority_element_round_23.py
new file mode 100644
index 00000000..5c878cc5
--- /dev/null
+++ b/tests/test_150_questions_round_23/test_05_majority_element_round_23.py
@@ -0,0 +1,17 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_23\
+.ex_05_majority_element import Solution
+
+class MajorityElementTestCase(unittest.TestCase):
+
+    def test_is_major_element(self):
+        solution = Solution()
+        output = solution.majorityElement(nums=[3,2,3])
+        target = 3
+        self.assertEqual(output, target)
+
+    def test_is_no_major_element(self):
+        solution = Solution()
+        output = solution.majorityElement(nums = [1,2,3])
+        target = -1
+        self.assertEqual(output, target)
\ No newline at end of file