Computer Science · Data Structures
A queue has the configuration a, b, c, d (with 'a' at the front and 'd' at the rear). If you want to reverse this configuration to d, c, b, a using only standard queue operations (enqueue/dequeue) and an auxiliary stack, what is the minimum number of deletions (dequeues) and additions (enqueues) required?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 deletions and 3 additions
- 23 deletions and 3 additions
- 34 deletions and 4 additions✓
- 44 deletions and 3 additions
Correct answer
4 deletions and 4 additions
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