IDP Education Limited UI Developer Interview Questions and Answers

Q1. They have asked about my resume or working experience. how i implemented those features
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Q2. Merge 2 array and sort in ascending order in JS, use Effect Hooks, Debouncing, Throttling, about API integration, how u fetched and make faster API call.
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Q1. Longest substring without repeating characters
Ans. 
Find the longest substring without repeating characters in a given string.
• Use a sliding window approach to track the longest substring without repeating characters.

• Keep track of the characters seen so far using a hashmap.

• Update the start index of the window when a repeating character is encountered.
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Q2. High level design of a social media app
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A social media app allows users to connect, share content, and interact with each other.
• User profiles with personal information and photos

• News feed displaying posts from friends and followed accounts

• Messaging feature for private communication

• Ability to like, comment, and share posts

• Notification system for updates and interactions
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Q1. Design a movie ticket booking system(LLD)
Ans. 
Design a movie ticket booking system
• Use case: Users can search for movies, select showtimes, choose seats, and make payments

• Components: User authentication, movie database, showtime scheduling, seat selection, payment gateway

• Considerations: Seat availability, seat selection algorithm, payment security
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Q1. 2 medium DSA ques
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Q1. Hiring Manager round about projects indepth discussion
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Moderate to difficult

Q1. DSA questions based on Dynamic programming
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They give you the task to make an application with the following requirements and conditions, you have to submit that before the deadline. After clearing this round they go further for Technical Interview.

Q1. 1. What do you know about client-side validation?
Ans. 
Client-side validation is the process of validating user input on the client-side before submitting it to the server.
• It is performed using JavaScript or HTML5 attributes.

• It helps to reduce server load and improve user experience.

• It can be easily bypassed, so server-side validation is also necessary.

• Examples include checking for required fields, email format, and password strength.
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Q2. 2. Explain the life cycle of .net application?
Ans. 
The .NET application life cycle involves several stages from compilation to execution.
• Compilation of source code into MSIL (Microsoft Intermediate Language)

• Loading of MSIL into CLR (Common Language Runtime)

• Just-in-time (JIT) compilation of MSIL into machine code

• Execution of machine code by the operating system

• Garbage collection to free up memory used by the application
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Q3. 3. A random condition to write javascript code.
Ans. 
A random condition to write javascript code.
• Use a conditional statement to check if a variable is equal to a certain value

• Create a function that generates a random number and use it in a conditional statement

• Use the Math.random() method to generate a random number and use it in a conditional statement
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Q4. 4. CSS properties following up with questions.
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Q5. 5. Exception Handling
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Q1. Very good all angular related question
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Q2. Rxjs concepts subjects
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Q3. Angular life cycle hooks
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Q4. How to use fork join
Ans. 
Fork join is a technique used in parallel programming to divide a task into smaller subtasks and then combine the results.
• Fork join is commonly used in multi-threading or concurrent programming.

• It allows multiple threads to work on different parts of a task simultaneously.

• Once all the subtasks are completed, the results are combined to get the final result.

• Fork join can improve performance by utilizing the available re...read more
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Q5. RESTand SPREAD operators
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Q1. Javascript questions
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Q2. Have idea how to fetch Data from an API
Ans. 
Yes, by using AJAX or Fetch API to make a request to the API endpoint and handle the response data.
• Use AJAX or Fetch API to make a request to the API endpoint

• Handle the response data by parsing it in JSON format

• Display the fetched data on the front end as needed
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Q3. React Question basics not hard
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