diff --git a/src/my_project/interviews/top_150_questions_round_23/ex_11_h_index.py b/src/my_project/interviews/top_150_questions_round_23/ex_11_h_index.py
new file mode 100644
index 00000000..2bc31b7a
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_23/ex_11_h_index.py
@@ -0,0 +1,16 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def hIndex(self, citations: List[int]) -> int:
+
+        citations.sort(reverse=True)
+        len_cit:int = len(citations)
+        answer:int = 0
+
+        for i in range(len_cit):
+
+            if citations[i] >= i + 1:
+                answer = i + 1
+
+        return answer
diff --git a/src/my_project/interviews_typescript/top_150_questions_round_23/ex_11_h_index.ts b/src/my_project/interviews_typescript/top_150_questions_round_23/ex_11_h_index.ts
new file mode 100644
index 00000000..0d002863
--- /dev/null
+++ b/src/my_project/interviews_typescript/top_150_questions_round_23/ex_11_h_index.ts
@@ -0,0 +1,13 @@
+function hIndex(citations: number[]): number {
+    citations.sort((a, b) => b - a);
+    const lenCit: number = citations.length;
+    let answer: number = 0;
+
+    for (let i = 0; i < lenCit; i++) {
+        if (citations[i] >= i + 1) {
+            answer = i + 1;
+        }
+    }
+
+    return answer;
+};        
diff --git a/tests/test_150_questions_round_23/test_11_h_index_round_23.py b/tests/test_150_questions_round_23/test_11_h_index_round_23.py
new file mode 100644
index 00000000..7550aeaf
--- /dev/null
+++ b/tests/test_150_questions_round_23/test_11_h_index_round_23.py
@@ -0,0 +1,17 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_23\
+.ex_11_h_index import Solution
+
+class hIndexTestCase(unittest.TestCase):
+
+    def test_h_index_test_1(self):
+        solution = Solution()
+        output = solution.hIndex(citations = [3,0,6,1,5])
+        target = 3
+        self.assertEqual(output, target)
+
+    def test_h_index_test_2(self):
+        solution = Solution()
+        output = solution.hIndex(citations = [1,3,1])
+        target = 1
+        self.assertEqual(output, target)        
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