Python Algorithms Online Test

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The Python Algorithms online test assesses candidates' algorithmic-thinking skills and their ability to implement algorithms using Python.

It's an ideal test for pre-employment screening. A good developer will be able to design and implement algorithms that are both correct and efficient. Computational complexity is important not only when scaling applications but when creating responsive, maintainable, and efficient code.

This online test requires candidates to analyze or design an algorithm using Python as the programming language.

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Sample Free Questions

Binary Search Tree

15min
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Easy  
  -  
CODE

Python Algorithmic thinking Data structures Public

A three-node binary tree.Binary search tree (BST) is a binary tree where the value of each node is larger or equal to the values in all the nodes in that node's left subtree and is smaller than the values in all the nodes in that node's right subtree.

Write a function that, efficiently with respect to time used, checks if a given binary search tree contains a given value.

For example, for the following tree:

  • n1 (Value: 1, Left: null, Right: null)
  • n2 (Value: 2, Left: n1, Right: n3)
  • n3 (Value: 3, Left: null, Right: null)

Call to contains(n2, 3) should return True since a tree with root at n2 contains number 3.

Playlist

15min
  -  
Easy  
  -  
CODE

Python Algorithmic thinking Searching Public

A playlist is considered a repeating playlist if any of the songs contain a reference to a previous song in the playlist. Otherwise, the playlist will end with the last song which points to None.

Implement a function is_repeating_playlist that, efficiently with respect to time used, returns true if a playlist is repeating or false if it is not.

For example, the following code prints "True" as both songs point to each other.

first = Song("Hello")
second = Song("Eye of the tiger")
    
first.next_song(second);
second.next_song(first);
    
print(first.is_repeating_playlist())
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Document Store, Category Tree, Crop Ratio, Programmer Teacher, Greeter, Chain Link, Is Alpha, Reward Points, Hobbies, Log Parser, Medical Record, Needle, Numbers to Text, Paragraph, Products, Read Write Execute, Shipping, Tuple Slice, Username, Word Count, Date Transform, Segment, Read First Line, Cargo Ship, Platformer, Entry, Rare, Unique Numbers, Moving Total, Log Patch, Max Sum
Skills
Python Bug fixing Language Data structures OOP List comprehension Strings Collections Iteration Serialization Stream Sorting Arithmetic Exceptions Algorithmic thinking Searching Monkey Patching
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