diff --git a/src/my_project/interviews/top_150_questions_round_22/ex_50_valid_parentheses.py b/src/my_project/interviews/top_150_questions_round_22/ex_50_valid_parentheses.py
new file mode 100644
index 00000000..ebc42315
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_22/ex_50_valid_parentheses.py
@@ -0,0 +1,21 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def isValid(self, s):
+
+        dic_parentheses = {'(':')','[':']','{':'}'}
+
+        check_list = list()
+
+        for p in s: 
+
+            if p in dic_parentheses:
+                check_list.append(p)
+            else:
+                if len(check_list) == 0 or \
+                    dic_parentheses[check_list.pop()] != p:
+
+                    return False 
+                
+        return len(check_list) == 0
diff --git a/src/my_project/interviews_typescript/top_150_questions_round_1/ex_50_valid_parentheses.ts b/src/my_project/interviews_typescript/top_150_questions_round_1/ex_50_valid_parentheses.ts
new file mode 100644
index 00000000..d24b70c1
--- /dev/null
+++ b/src/my_project/interviews_typescript/top_150_questions_round_1/ex_50_valid_parentheses.ts
@@ -0,0 +1,24 @@
+function isValid(s: string): boolean {
+
+    const dicParentheses: {[key: string]: string} = {
+        '(': ')',
+        '[': ']',
+        '{': '}'        
+    }
+
+    const checkList: string[] = []
+
+    for (const p of s){
+        if (p in dicParentheses){
+            checkList.push(p)
+        }else{
+            if (checkList.length === 0 || 
+                dicParentheses[checkList.pop()!] !== p){
+                return false 
+            }
+        }
+    }
+
+    return checkList.length === 0
+    
+};        
diff --git a/tests/test_150_questions_round_22/test_50_valid_parentheses_round_22.py b/tests/test_150_questions_round_22/test_50_valid_parentheses_round_22.py
new file mode 100644
index 00000000..32c9261a
--- /dev/null
+++ b/tests/test_150_questions_round_22/test_50_valid_parentheses_round_22.py
@@ -0,0 +1,20 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_22\
+.ex_50_valid_parentheses import Solution
+
+class ValidParenthesesTestCase(unittest.TestCase):
+
+    def test_is_valid_parentheses(self):
+        solution = Solution()
+        output = solution.isValid(s='()')
+        self.assertTrue(output)
+
+    def test_is_no_valid_parentheses_pattern_1(self):
+        solution = Solution()
+        output = solution.isValid(s='(]')
+        self.assertFalse(output)
+
+    def test_is_no_valid_parentheses_pattern_2(self):
+        solution = Solution()
+        output = solution.isValid(s='((')
+        self.assertFalse(output)
\ No newline at end of file