Merge pull request #1242 from ivan1016017/april16

adding algo

Author: ivanpenaloza

src/my_project/interviews/top_150_questions_round_15/valid_parentheses.py

@@ -0,0 +1,18 @@
+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 p != dic_parentheses[check_list.pop()]:
+                    return False 
+                
+        return len(check_list) == 0