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Question

Let the initial configuration of a queue is a,b,c,d. How many min. no.
of deletions & insertions are needed to make the final configuration
od d,c,b,a:



Options:
A .  3 deletions and 2 insertions
B .  2 deletions and 2 insertions
C .  3 deletions and 3 insertions
D .  2 deletions and 3 insertions
Answer: Option A



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