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Questions and Answers

What is the most basic data structure?

  • Linked List
  • Graph
  • Tree
  • Array (correct)

Which operation is performed in constant time, O(1), for an array?

  • Accessing an element by index (correct)
  • Searching for an element
  • Deleting an element from the middle
  • Inserting an element at the beginning

Which data structure uses the FIFO (First-In, First-Out) principle?

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

What is the main advantage of a linked list??

<p>Efficient insertion and deletion of elements (C)</p> Signup and view all the answers

Which of the following describes a graph data structure?

<p>Elements consist of nodes and edges (C)</p> Signup and view all the answers

What is the root in a tree data structure?

<p>The starting node (C)</p> Signup and view all the answers

What is a binary tree?

<p>A tree where each node has at most two children (B)</p> Signup and view all the answers

What is the purpose of a hash function?

<p>To map keys to indices (B)</p> Signup and view all the answers

What is the time complexity of searching for an element in a balanced binary search tree?

<p>O(log n) (D)</p> Signup and view all the answers

Which of the following is a benefit of using a stack?

<p>Managing function calls (B)</p> Signup and view all the answers

Which data structure is suitable for implementing a priority queue?

<p>Heap (B)</p> Signup and view all the answers

What does the term 'recursion' mean?

<p>A function that calls itself (A)</p> Signup and view all the answers

When is it best to use a linked list over an array?

<p>When frequent insertions and deletions are needed (D)</p> Signup and view all the answers

Which of the following is a disadvantage of using arrays?

<p>Fixed size (D)</p> Signup and view all the answers

Which of the following is a non-linear data structure?

<p>Graph (D)</p> Signup and view all the answers

What is an abstract data type (ADT)?

<p>A data type whose implementation is hidden (D)</p> Signup and view all the answers

Which of the following best describes a dictionary or map data structure?

<p>Stores key-value pairs (A)</p> Signup and view all the answers

What is the purpose of a tree traversal?

<p>To visit all nodes in the tree (C)</p> Signup and view all the answers

What is the main characteristic of a binary search tree?

<p>Left child is less than or equal to the parent and right child is greater (C)</p> Signup and view all the answers

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