Add u6/matching_brackets.py

u6/matching_brackets.py

@@ -0,0 +1,18 @@
+def is_paired(input_string: str) -> bool:
+    stack = []
+    
+    bracket_pairs = {
+        ')': '(',
+        ']': '[',
+        '}': '{'
+    }
+    
+    for char in input_string:
+        if char in "([{":
+            stack.append(char)
+        elif char in ")]}":
+            if not stack or stack[-1] != bracket_pairs[char]:
+                return False
+            stack.pop()
+            
+    return len(stack) == 0