Data Structures Multiple Choice Quiz
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Questions and Answers

What is the time complexity of inserting an element at the end of an array-based list?

  • O(n)
  • O(1) (correct)
  • O(n^2)
  • O(log n)
  • Which data structure uses Last In First Out (LIFO) principle?

  • Queue
  • Stack (correct)
  • Linked List
  • Binary Tree
  • Which data structure organizes data in a hierarchy with a root node, parent nodes, and child nodes?

  • Stack
  • Tree (correct)
  • Linked List
  • Queue
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