UGC-NET | UGC NET CS 2017 Jan – III | Question 67

From the given data below :
a b b a a b b a a b
which one of the following is not a word in the dictionary created by LZ-coding (the initial words are a, b)?
(A) a b
(B) b b
(C) b a
(D) b a a b


Answer: (B) (D)

Explanation: Input is : a b b a a b b a a b
According to L-Z coding:
The dictionary contains: a | b | ba | ab| baa (is already there)
baab and bb are not there
So, option B and D are correct.

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