10+ Sankey Solutions Interview Questions and Answers

Aggregate functions in SQL are used to perform calculations on a set of values and return a single value.

• Common aggregate functions include SUM, AVG, COUNT, MAX, and MIN.

• SUM calculates the total of a set of values.

• AVG calculates the average of a set of values.

• COUNT counts the number of values in a set.

• MAX returns the highest value in a set.

• MIN returns the lowest value in a set.

Answering the question of writing name 100 times without using any loop.

• Write your name 100 times manually

• Use copy-paste feature to write your name multiple times

• Use a script or program to generate your name 100 times

OOPs stands for Object-Oriented Programming. Pillars of OOPs are Inheritance, Encapsulation, Abstraction, and Polymorphism. Lists and tuples are data structures in Python.

• OOPs stands for Object-Oriented Programming

• Pillars of OOPs are Inheritance, Encapsulation, Abstraction, and Polymorphism

• Lists and tuples are data structures in Python

• Lists are mutable while tuples are immutable

A recursion program is a function that calls itself until a base case is reached.

• Identify the base case and write the code to handle it

• Write the recursive case that calls the function with a modified input

• Ensure the recursive case moves towards the base case

• Example: Factorial function: function factorial(n) { if (n === 0) { return 1; } else { return n * factorial(n-1); } }

• Example: Fibonacci sequence: function fibonacci(n) { if (n <= 1) { return n; } else { return fibonacci(n-...read more

Remove duplicates from an array

• Use a loop to iterate through the array

• Use a hash table to keep track of unique values

• If a value is already in the hash table, remove it from the array

SQL basics include querying databases, manipulating data, and managing database structures.

• SQL stands for Structured Query Language

• Used for querying databases to retrieve specific data

• Can also be used to insert, update, and delete data in databases

• Used for creating and modifying database structures like tables, indexes, and views

Java is a popular programming language known for its platform independence and object-oriented approach.

• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM)

• It is object-oriented, allowing for the creation of reusable code through classes and objects

• Java uses a syntax similar to C++, making it easy for programmers to learn if they are familiar with C-based languages

The pillars of Python refer to the core principles that guide the design and development of the Python programming language.

• Readability counts: Python emphasizes code readability and simplicity, making it easier for developers to write and maintain code.

• Explicit is better than implicit: Python encourages clear and explicit code over ambiguity and complexity.

• Simple is better than complex: Python promotes simplicity and straightforward solutions to problems.

• There should be one-...read more

To find the 2nd highest salary, use a subquery to select the max salary that is not the highest.

• Use a subquery to find the maximum salary that is not the highest

• Select the maximum salary from the table where the salary is less than the highest salary

• Order the results in descending order and limit the result to the second row

There are various types of trends in UI/UX design.

• Visual trends (e.g. flat design, material design)

• Interaction trends (e.g. microinteractions, chatbots)

• Layout trends (e.g. card-based design, asymmetrical layouts)

• Typography trends (e.g. bold and large fonts, custom typography)

• Color trends (e.g. gradients, duotones)

• Animation trends (e.g. motion graphics, 3D animations)

JavaScript can be used with CSS and HTML to enhance the functionality and interactivity of web pages.

• Use JavaScript to manipulate CSS properties and styles dynamically

• Add event listeners in JavaScript to trigger CSS changes based on user interactions

• Use JavaScript to update HTML content based on user input or other actions

UX design is the process of designing digital products that are user-centered and provide a positive user experience.

• UX design focuses on understanding user needs and behaviors

• It involves creating wireframes, prototypes, and conducting user testing

• Good UX design results in products that are easy to use and meet user goals

• Examples of good UX design include the iPhone, Airbnb, and Google Maps

Dynamic programming is a method for solving complex problems by breaking them down into simpler subproblems.

• Identify the optimal substructure and overlapping subproblems in the problem

• Use memoization or tabulation to store and reuse solutions to subproblems

• Examples: Fibonacci sequence, Longest Common Subsequence, Knapsack problem

DevOps is a set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems development life cycle and provide continuous delivery.

• DevOps aims to automate and integrate the processes between software development and IT teams to build, test, and release software more quickly and reliably.

• It involves collaboration, communication, and integration of tools to streamline the development and deployment of software.

• DevOps helps organizations ...read more

Polymorphism is the ability of an object to take on many forms.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Animal superclass with Dog and Cat subclasses. Both Dog and Cat can be treated as Animals.

OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Animal class can be inherited by Dog class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Using private variables and public methods in a class.

• Polymorphism: Ability of a single function or method to...read more