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UGC-NET | UGC NET CS 2015 Dec - II | Question 43

Which of the following statements is false?


Top-down parsers are LL parsers where first L stands for left - to - right scan and second L stands for a leftmost derivation.


(000)* is a regular expression that matches only strings containing an odd number of zeroes, including the empty string.


Bottom-up parsers are in the LR family, where L stands for left - to - right scan and R stands for rightmost derivation.


The class of context - free languages is closed under reversal. That is, if L is any context - free language, then the language LR = {wR: w∈L} is context - free.


Please comment below if you find anything wrong in the above post
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