Data Structure and Algorithms (DSA) MCQs with answers Page - 49

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Q. To perform level-order traversal on a binary tree, which of the following data structure will be required?

  • (A) Hash table
  • (B) Queue
  • (C) Binary search tree
  • (D) Stack

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Q. Which of the following data structure is required to convert arithmetic expression in infix to its equivalent postfix notation?

  • (A) Queue
  • (B) Linked list
  • (C) Binary search tree
  • (D) None of above

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Q. A binary tree in which all its levels except the last, have maximum numbers of nodes, and all the nodes in the last level have only one child it will be its left child. Name the tree.

  • (A) Threaded tree
  • (B) Complete binary tree
  • (C) M-way search tree
  • (D) Full binary tree

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Q. Which of following data structure is more appropriate for implementing quick sort iteratively?

  • (A) Deque
  • (B) Queue
  • (C) Stack
  • (D) Priority queue

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Q. The number of edges in a complete graph of n vertices is

  • (A) n(n+1)/2
  • (B) n(n-1)/2
  • (C) n2/2
  • (D) n

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Q. If two trees have same structure and but different node content, then they are called ___

  • (A) Synonyms trees
  • (B) Joint trees
  • (C) Equivalent trees
  • (D) Similar trees

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Q. If two trees have same structure and node content, then they are called ____

  • (A) Synonyms trees
  • (B) Joint trees
  • (C) Equivalent trees
  • (D) Similar trees

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Q. Finding the location of a given item in a collection of items is called ……

  • (A) Discovering
  • (B) Finding
  • (C) Searching
  • (D) Mining

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Q. The time complexity of quicksort is ……..

  • (A) O(n)
  • (B) O(logn)
  • (C) O(n2)
  • (D) O(n logn)

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Q. Quick sort is also known as ……..

  • (A) merge sort
  • (B) tree sort
  • (C) shell sort
  • (D) partition and exchange sort

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