20 Validate Parentheses

easy/20 Valid Parentheses/solution.py

@@ -0,0 +1,21 @@
+from collections import deque
+
+
+class Solution:
+    def isValid(self, s: str) -> bool:
+        b_queue = deque()
+
+        for c in s:
+            if c == "[":
+                b_queue.append("]")
+            elif c == "(":
+                b_queue.append(")")
+            elif c == "{":
+                b_queue.append("}")
+            elif c in ["}", ")", "]"]:
+                if not len(b_queue) > 0:
+                    return False
+                if c != b_queue.pop():
+                    return False
+
+        return not len(b_queue) > 0