What is the time complexity of appending an element to the end of a dynamic arra

Practice Questions

Q1
What is the time complexity of appending an element to the end of a dynamic array?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Questions & Step-by-Step Solutions

What is the time complexity of appending an element to the end of a dynamic array?
  • Step 1: Understand what a dynamic array is. A dynamic array is a data structure that can grow in size when needed.
  • Step 2: Know that appending means adding an element to the end of the array.
  • Step 3: When the dynamic array has enough space, appending an element takes constant time, O(1).
  • Step 4: If the dynamic array is full, it needs to resize. This involves creating a new larger array and copying all existing elements to it.
  • Step 5: The resizing process takes O(n) time, where n is the number of elements in the array.
  • Step 6: Therefore, in the worst case, appending an element can take O(n) time when resizing is needed.
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