Implemented balanced brackets in Python. Closes issue #30

Author: abhikandoi2000

balanced-brackets/balanced-brackets.py

@@ -0,0 +1,23 @@
+# Use a dictionary to map sets of brackets to their opposites
+brackets = {
+  '(': ')',
+  '{': '}',
+  '[': ']'
+}
+
+# On each input string, process it using the balance checker
+def balancedBrackets(string):
+  stack = []
+  # Process every character on input
+  for char in string:
+    # Assign an initial value in case the stack is empty
+    last = 0
+    # Assign the value of the last element if stack is not empty
+    if stack:
+      last = stack[len(stack) - 1]
+    if stack and last in brackets and brackets[last] == char:
+      stack.pop()
+    else:
+      stack.append(char)
+
+  return not stack