Adding interview question "redundant brackets"

Redundant Brackets

@@ -0,0 +1,45 @@
+from sys import stdin
+
+def checkRedundantBrackets(expression) :
+	# Your code goes here
+
+    # create a stack of characters
+    st = []
+
+    # Iterate through the given expression
+    for ch in expression:
+
+        # if current character is close
+        # parenthesis ')'
+        if (ch == ')'):
+            top = st[-1]
+            st.pop()
+
+            # If immediate pop have open parenthesis
+            # '(' duplicate brackets found
+            flag = True
+
+            while (top != '('):
+
+                # Check for operators in expression
+                if (top == '+' or top == '-' or
+                    top == '*' or top == '/'):
+                    flag = False
+
+                # Fetch top element of stack
+                top = st[-1]
+                st.pop()
+
+            # If operators not found
+            if (flag == True):
+                return True
+
+        else:
+            st.append(ch) # append open parenthesis '(',
+                          # operators and operands to stack
+    return False
+
+
+
+
+