Consider the languages: GATE[2005]L1 = {wwR w €{0, 1} *1L2 ={w#ww € {O,1}*},where # is a special symbolL3 ={www € {0,1}*}Which one of the following is TRUE?

Related MCQs

• Consider the languages L1={0^{i}1^{j}|i != j}, L2={0^{i}1^{j}|i = j}, L3 = {0^{i}1^{j}|i = 2j+1}, L4 = {0^{i}1^{j}|i != 2j}. Which one of the following statements is true?
• Consider the following context free languages: L1 = {0^i 1^j 2^k | i+j = k} L2 = {0^i 1^j 2^k | i = j or j = k} L3 = {0^i 1^j | i = 2j+1} Which of the following option is true?
• Consider the languages: L1 ={a^n b^n c^m | n,m >01 and L2 ={a^n b^m c^m |n,m> o) Which one of the following statements is FALSE?
• Let L1 be a recursive language. Let L2 and L3 be languages that are recursively enumerable but not recursive. Which of the following statements is not necessarily true?
• Which of the following statements are TRUE? I. There exist parsing algorithms for some programming languages whose complexities are less than O(n3). II. A programming language which allows recursion can be implemented with static storage allocation. III. No L-attributed definition can be evaluated in the framework of bottom-up parsing. IV. Code improving transformations can be performed at both source language and intermediate code level.
• Consider the following grammar. S -> S * E S -> E E -> F + E E -> F F -> id Consider the following LR(0) items corresponding to the grammar above. (i) S -> S * .E (ii) E -> F. + E (iii) E -> F + .E Given the items above, which two of them will appear in the same set in the canonical sets-of-items for the grammar?
• Consider the following two problems on undirected graphs: α: Given G(V,E), does G have an independent set of size |v|—4? β: Given G(V,E), does G have an independent set of size 5? Which one of the following is TRUE?
• Consider the grammar defined by the following production rules, with two operators ∗ and + S --> T * P T --> U | T * U P --> Q + P | Q Q --> Id U --> Id Which one of the following is TRUE?
• Consider the following expression grammar. The seman-tic rules for expression calculation are stated next to each grammar production. E → number E.val = number. val | E '+' E E(1).val = E(2).val + E(3).val | E '×' E E(1).val = E(2).val × E(3).val The above grammar and the semantic rules are fed to a yacc tool (which is an LALR (1) parser generator) for parsing and evaluating arithmetic expressions. Which one of the following is true about the action of yacc for the given grammar?
• Consider three decision problems P1, P2 and P3. It is known that P1 is decidable and P2 is undecidable. Which one of the following is TRUE?