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1. |
The initial configuration of a queue is a, b, c, d, ('a' is in the front end). To get the configuration d, c, b, a, one needs a minimum of |
A. | 2 deletions and 3 additions |
B. | 3 deletion and 2 additions |
C. | 3 deletions and 3 additions |
D. | 3 deletions and 4 additions |
Answer» D. 3 deletions and 4 additions | |