Python DSA libraries

This quiz checks what you know about Python DSA (Data Structures and Algorithms) libraries. These libraries help you solve problems faster and write cleaner, more efficient code!

Last Updated :
Discuss
Comments

Question 1

What is the primary feature of a min-heap created using heapq in Python?

  • The largest element is always at index 0

  • All elements are sorted

  • The smallest element is always at index 0

  • The elements are stored in a dictionary

Discuss it

Question 2

What does heapq.heappushpop(heap, elem) do?

  • Removes the largest element

  • Pushes then pops the largest element

  • Pushes elem, then pops and returns the smallest element

  • Sorts the heap

Discuss it

Question 3

What will the following code output?

Python 
import heapq  
h = [3, 2, 1]  
heapq.heapify(h)  
print(heapq.heappop(h))



  • 1

  • 2

  • 3

  • Error

Discuss it

Question 4

Which function will return the 2 largest elements from a heap?

  • heapq.heappop()

  • heapq.heappushpop()

  • heapq.nlargest(2, heap)

  • heapq.popmax()

Discuss it

Question 5

What does bisect.bisect_right([1, 3, 3, 3, 5], 3) return?

  • 1

  • 2

  • 4

  • 0

Discuss it

Question 6

What is the difference between bisect_left() and bisect_right()?

  • bisect_left() inserts at end

  • bisect_right() inserts before equal elements

  • bisect_left() inserts before equal elements, bisect_right() after

  • No difference

Discuss it

Question 7

What does the following code do?

Python 
import bisect  
arr = [1, 2, 4, 5]  
bisect.insort(arr, 3)  
print(arr)


  • [1, 2, 3, 4, 5]

  • [1, 2, 4, 5, 3]

  • [3, 1, 2, 4, 5]

  •  Error

Discuss it

Question 8

What is the output of the following array code?

Python 
import array  
a = array.array('i', [1, 2, 3])  
a.append(4)  
print(a.tolist())


  • [1, 2, 3]

  • [1, 2, 3, 4]

  • [4, 3, 2, 1]

  • Error

Discuss it

Question 9

What does arr.remove(1) do in an array?

  • Removes all 1s

  • Removes last element

  • Removes the first occurrence of 1

  • Throws an error

Discuss it

Question 10

Which collections container retains key insertion order?

  • defaultdict

  • deque

  • OrderedDict

  • Counter

Discuss it

There are 15 questions to complete.

Take a part in the ongoing discussion
We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy