Xpert Times Interview Questions and Answers

SHL platform, choose the best answer form cse concept,apti,

Q1. Face to face in college campus
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Q1. It only for clearing the technical round
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45 mins coding test having javascript and react questions

Q1. Print the character and the count of character on UI whenever a keystroke happens , implement it in react
Ans. 
Implement a feature in React to display the character and count of characters on UI on each keystroke.
• Use state to store the input value and update it on each keystroke.

• Use a function to count the characters in the input value and display the result on the UI.

• Use event listeners to detect keystrokes and trigger the character count update.
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Q2. Questions about micro-frontend, web workers, best react practices
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Q1. How do you optimize frontend code
Ans. 
Optimizing frontend code involves minimizing file sizes, reducing HTTP requests, using efficient algorithms, and implementing caching strategies.
• Minimize file sizes by removing unnecessary code, using minification tools, and optimizing images.

• Reduce HTTP requests by combining files, using sprites, and lazy loading resources.

• Use efficient algorithms and data structures to improve performance.

• Implement caching strategies...read more
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Q2. How do you collaborate in team
Ans. 
I collaborate in team by actively participating in discussions, sharing ideas, providing feedback, and working together towards common goals.
• Actively participate in team meetings and discussions

• Share ideas and insights with team members

• Provide constructive feedback on others' work

• Collaborate on projects by dividing tasks and working together towards common goals
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Q1. General strenghts and weakness questions
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Q2. Past experience , conflict handling
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Q1. Tell me about yourself
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Q1. Explain how power bi works
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Q1. Merge 2 sorted Arrays
Ans. 
Merging two sorted arrays into a single sorted array
• Create a new array to store the merged result

• Use two pointers to iterate through both arrays and compare elements

• Add the smaller element to the new array and move the pointer for that array
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Q2. Write polyfill for getElementById
Ans. 
Polyfill for getElementById function in JavaScript
• Create a function named getElementById

• Check if the function already exists, if not, create it

• Use document.querySelector to select the element by ID

• Return the selected element
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Q3. What are the new features in React 18 ? Optimisation techinques in React ? Concurrency in React ?
Ans. 
React 18 introduces new features like automatic batching, start transition, and streaming server renderer. It also focuses on performance optimizations and concurrent rendering.
• New features in React 18 include automatic batching, start transition, and streaming server renderer.

• Optimization techniques in React 18 involve concurrent rendering, improved scheduling, and reduced re-renders.

• Concurrency in React 18 allows for...read more
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Q1. HLD round to develop Autocomplete feature End to End with API contracts and architecture.
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Q2. Remove duplicate characters from a sentence
Ans. 
Remove duplicate characters from a sentence
• Create an empty array to store unique characters

• Iterate through each character in the sentence

• Check if the character is already in the array, if not add it
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Q1. Two Pointer Technique question to get the highest sum from two sorted list by jumping from one list to another list on common element.
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Q2. Combine two sorted array such as first element would be the lowest element and second would be the largest element as so on.
Ans. 
Merge two sorted arrays with alternating lowest and highest elements.
• Create a new array to store the result

• Use two pointers to iterate through the two input arrays

• Alternate between adding the lowest and highest elements to the result array
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Q1. Design SplitWise
Ans. 
SplitWise is a platform for splitting expenses among friends or groups.
• Allow users to create groups and add expenses

• Calculate each user's share of the expenses

• Send notifications to users for pending payments

• Support multiple currencies for international groups
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Q1. Design API Rate Limiter
Ans. 
Design API Rate Limiter to control the number of requests a user can make within a specific time frame.
• Implement a token bucket algorithm to track and limit the number of requests per user.

• Use a sliding window to track the time frame for request limits.

• Consider using a distributed cache like Redis to store and manage request limits.

• Provide appropriate error responses when the rate limit is exceeded.

• Allow for customizat...read more
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Basic aptitude test with LR questions

Q1. About what you do, your past experince and portfolio
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Design assignment for their app.

Q1. Questions around submitted assignment
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Q1. Final round with design head.
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Q1. Cultural round questio. Situation based questions.
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Q1. Where do you see yourself
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Q2. Give examples of your past work
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