AlphaSense UI Developer Interview Questions and Answers

Q1. What is closures
Ans. 
Closures are functions that have access to variables from their outer scope even after the outer function has finished executing.
• Closures allow functions to access variables from their parent function even after the parent function has returned.

• They help in creating private variables and functions in JavaScript.

• Closures are commonly used in event handlers and callbacks.
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Q2. What is call apply bind
Ans. 
call, apply, and bind are methods in JavaScript used to manipulate the context of a function.
• call() is used to invoke a function with a specified 'this' value and arguments provided individually.

• apply() is similar to call() but arguments are passed as an array.

• bind() is used to create a new function with a specified 'this' value and initial arguments.
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Uging tag , elements, div, selector, flex box etc

Q1. Html, CSS, JavaScript, bootstrap
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Q2. Good knowledge for html CS
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Q3. Bootstrap using responsible website
Ans. 
Bootstrap is a front-end framework that helps in creating responsive websites by using a grid system and predefined classes.
• Bootstrap provides a grid system with 12 columns that automatically adjusts based on screen size.

• It includes responsive utility classes like 'd-none' and 'd-md-block' to show/hide content based on screen size.

• Bootstrap also offers responsive navigation components like the navbar that collapses int
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Q4. Anything else any more times
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Q1. What Prototype in JS What is closure in JS What Recursive functions What Constructor functions What hoisting in js Diff btw var,let, const Find the no of occurance of text in string Find the duplicate cou...read more
Ans. 
Prototype in JS refers to the mechanism by which objects in JavaScript inherit properties and methods from other objects.
• Prototype chain allows objects to inherit properties and methods from other objects

• Prototype-based inheritance is a key feature of JavaScript

• Example: Creating a new object using a constructor function and adding methods to its prototype
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General apptitude test

Based on project and dsa

3 coding dsa question
Difficulty is On your luck
My friends got easy level
I got medium level
Some got hard questions as well

Ssh round , quant and logical
Tip: bring your calculator

Q1. Two Puzzle : bulb switching and candle
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Q2. Dsa questions such as string reverse, binary search
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Q3. Dbms and os core subject questions
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Q1. How are you better than others
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Q2. Why should we hire you
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45 minutes
arrays, strings,
SHL

Q1. Find number of nodes in a tree and it's time complexity
Ans. 
To find number of nodes in a tree, perform a depth-first or breadth-first traversal and count the nodes. Time complexity is O(n).
• Perform a depth-first or breadth-first traversal of the tree

• Count the nodes as you traverse the tree

• Time complexity is O(n) where n is the number of nodes in the tree
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Q2. What is abstraction and how do you implement it ??
Ans. 
Abstraction is the concept of hiding complex implementation details and showing only the necessary information.
• Abstraction allows developers to focus on the essential features of an object or system.

• It helps in reducing complexity and improving efficiency in software development.

• Implement abstraction in programming by using abstract classes and interfaces.

• Example: In a car, we don't need to know the internal workings o...read more
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Q1. What is the minimum number of coins to reach the target with the coins 1,2,5
Ans. 
The minimum number of coins to reach a target amount can be calculated using dynamic programming.
• Use dynamic programming to calculate the minimum number of coins needed to reach the target amount.

• Start by initializing an array to store the minimum number of coins needed for each amount from 0 to the target amount.

• Iterate through the coin denominations and update the minimum number of coins needed for each amount based
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Q2. Byte stream to human readable format without using library
Ans. 
Convert byte stream to human readable format without using library
• Iterate through the byte stream and convert each byte to its ASCII character representation

• Concatenate the ASCII characters to form the human readable format

• Handle special characters and edge cases appropriately
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Array, math, sort, string javascript qutions

Simple coding qution