Python Algorithms and SQL Online Test
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The Python and SQL online test assesses candidates' knowledge of programming in the Python language and their ability to use SQL.
It's an ideal test for pre-employment screening. A good Python developer needs to be able not only to solve problems using Python but also to write and analyze SQL queries to access a database.
This online test requires candidates to solve coding problems in Python and to write SQL queries that extract, combine, and manipulate data.
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Free Sample Questions for Python Algorithms and SQL Test
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Binary Search 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.
Students
Given the following data definition, write a query that returns the number of students whose first name is John.
TABLE students id INTEGER PRIMARY KEY, firstName VARCHAR(30) NOT NULL, lastName VARCHAR(30) NOT NULL
Student Majors
A university's Office of Admission keeps track of student majors. Each student can have a single major. Below is an example of how their system stores students, majors, and how it manipulates them:
students = [("Allen Anderson", "Computer Science"),
("Edgar Einstein", "Engineering"),
("Farrah Finn", "Fine Arts")]
def add_new_student(students, name, major):
students.append((name, major))
def update_student(students, index, name, major):
students[index] = (name, major)
def find_students_by_name(students, name):
return [student for student in students if name in student[0]]
def get_all_majors(students):
return [student[1] for student in students]What can be concluded from the code snippet above?
(Select all acceptable answers.)
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Premium Questions for Python Algorithms and SQL Test
TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.
Question Names
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Book Sale, Veterinarian, Unique Numbers, Moving Total, Max Sum, Internal Nodes, Paper Strip, Friend, Roads, Authors, Autocomplete, Ban Users, Bank Branches, Cheapest Product, Countries, Developers, Hospital Patients, Index Performance, Menu Items, Merge Stock Index, Movies, Projects, Rectangles, Restaurant Menu, Retirees, SMS Messages, Poll, Users and Accounts, Matching Clothes, Agents, Sales, Employee Manager, Auto Show, Delete Orders, Transactions, Welfare Organization, Tasks, Manager Sales, Student Rankings, Student Activities, Youngest Child, Movies Live, Department Report, Ingredients, Average Salary, Movie Genres, Flight Connections, River Discharge, ATM LocationsCovered Skills
Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.
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