GATE | GATE-CS-2015 (Set 2) | Question 29

Match the following:

      List-I                  List-II
A. Lexical analysis       1. Graph coloring
B. Parsing                2. DFA minimization
C. Register allocation    3. Post-order traversal
D. Expression evaluation  4. Production tree

Codes:
    A B C D
(a) 2 3 1 4
(b) 2 1 4 3
(c) 2 4 1 3
(d) 2 3 4 1

(A) a
(B) b
(C) c
(D) d


Answer: (C)

Explanation:

Register allocation is a variation of Graph Coloring problem.

Lexical Analysis uses DFA.

Parsing makes production tree

Expression evaluation is done using tree traversal 

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