What is the worst-case time complexity for accessing an element in a queue imple

Practice Questions

Q1
What is the worst-case time complexity for accessing an element in a queue implemented using a linked list?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Questions & Step-by-Step Solutions

What is the worst-case time complexity for accessing an element in a queue implemented using a linked list?
  • Step 1: Understand what a queue is. A queue is a data structure that follows the First In First Out (FIFO) principle.
  • Step 2: Know that a queue can be implemented using a linked list, where each element points to the next one.
  • Step 3: Realize that to access an element in a linked list, you usually start from the head (the first element) and move through the list.
  • Step 4: Understand that in the worst case, you may have to look at every element in the list to find the one you want.
  • Step 5: Since there can be 'n' elements in the queue, the time it takes to access an element can be proportional to 'n'.
  • Step 6: Therefore, the worst-case time complexity for accessing an element in a queue implemented using a linked list is O(n).
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