mknudsen01/get-in-the-rithm — pull request #1 by mknudsen01 (2014-05-13 00:06:59+00:00)
Title: Add a bracket validator

* checks that all opened brackets are correctly closed
* returns false if they are not, true if they are
* O(n) time if we need to go through all of the brackets,
which we would if the brackets are correct
* O(n) space in case all of the brackets are openers and
are all added to the stack