15. If a queue is implemented under an ArrayList, how much time does a queue add an item? а. О(1) b. 0(n) с. 0(n?) d. 0(log n)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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15. If a queue is implemented under an ArrayList, how
much time does a queue add an item?
a. 0(1)
b. O(n)
с. О(n2)
d. 0(log n)
Transcribed Image Text:15. If a queue is implemented under an ArrayList, how much time does a queue add an item? a. 0(1) b. O(n) с. О(n2) d. 0(log n)
Expert Solution
Step 1

Explanation:

  • To add an item to the ArrayList takes O(1) time.
  • Because, we just add the element to beginning of the list.
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