Wingify Interview Questions, Process, and Tips

First round had around 25 multipl;e choice question on dsa,html,css,javascript,network security

Q1. Second was a telephonic round mainly for accessing the communication skill.
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Q2. Tell me about yoyself,about your projects and why do prefer this role.
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Q1. Technical round,questions based on html,css,javascript,Jquery,api
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Q1. Technical interview 2 first they started with asking questions on their product VWO,and again went back to html,css,javascript,jquery
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About 5 coding problems that were quite easy.

I remember a LCM and queue related question.

I solved 4/5 questions and got shortlisted for next round.

Asked me to rate myself in Javascript.

Then asked to do level order traversal of a dom element in javascript.

Then asked about temporal dead zone and promises.

Asked one DSA question that I solved using C++

Q1. SQL join question Computer network-related questions OS question -> What is starvation and what is the solution? Parallelism vs concurrency? What is a cookie? Difference between interface and abstract clas...read more
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2 easy DSA questions to be solved using Javascript

Q1. Custom implementation of array flat method
Ans. 
Custom implementation of array flat method
• Create a function that takes an array as input

• Iterate through each element of the array

• If an element is an array, recursively call the function on that element

• If an element is a string, add it to the result array

• Return the result array
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Q2. Explain memoization and write fibonacci code using memoization
Ans. 
Memoization is a technique to optimize function calls by caching their results.
• Memoization is used to store the results of expensive function calls and return the cached result when the same inputs occur again.

• It improves performance by avoiding redundant computations.

• Fibonacci sequence is a classic example to demonstrate memoization.

• Memoization can be implemented using an object or an array to store the cached results
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Q3. Frontend concepts like closures, debounce, React hooks and lifecycle, graphql, web workers, service workers etc.
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DSA questions on array, strings and linkedlist asked medium level of dsa questions.

Q1. Javascript intervew questions and react.js interview questions.
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Q2. What is difference between == and ===
Ans. 
The '==' operator checks for equality after type coercion, while '===' checks for equality without type coercion.
• The '==' operator compares two values after converting them to a common type.

• The '===' operator compares two values without type conversion, so they must be of the same type to be considered equal.

• Example: 1 == '1' will return true because the values are equal after type coercion, but 1 === '1' will return f
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Q3. What is async await
Ans. 
Async await is a feature in JavaScript that allows for asynchronous code to be written in a synchronous manner.
• Async await is built on top of promises and provides a cleaner syntax for handling asynchronous operations.

• It allows you to write asynchronous code that looks like synchronous code, making it easier to read and maintain.

• The 'async' keyword is used to define a function as asynchronous, while the 'await' keyword...read more
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Q4. Tell me about IIFE
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Q5. What is call back hell in javascript
Ans. 
Callback hell refers to the situation where multiple nested callbacks make the code difficult to read and maintain.
• Occurs when multiple asynchronous operations are nested within each other

• Can lead to deeply nested code structure which is hard to follow

• Can be avoided by using promises or async/await
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DSA required of high level so be prepared

Q1. Why do you want to join
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Q2. Tell me about yourself
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