Websoftex Software Solutions UI Developer Interview Questions and Answers

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
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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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General apptitude test

Based on project and dsa

Q1. Java basic questions.
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Q2. Rest basics methods like get, post, put, delete etc
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Q3. Given a directory name, write a program to return a list of all .tst files present in the directory and its sub directories.
Ans. 
Program to return list of .tst files in given directory and subdirectories
• Use recursion to traverse through all directories and subdirectories

• Check if each file has .tst extension and add to list if true

• Use built-in functions like os.listdir() and os.path.splitext() in Python
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Q1. Difference between == and equals
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The '==' operator is used for comparing values of primitive data types, while the 'equals' method is used for comparing objects in Java.
• Use '==' to compare primitive data types like int, char, boolean, etc.

• Use 'equals' method to compare objects like Strings, Lists, etc.

• Example: int a = 5; int b = 5; if(a == b) { // true }

• Example: String str1 = 'hello'; String str2 = 'hello'; if(str1.equals(str2)) { // true }
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Q2. Use case of abstract class and interfaces
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Abstract classes are used to provide a common base for multiple classes, while interfaces define a contract for classes to implement.
• Abstract classes can contain both abstract and concrete methods, while interfaces can only have abstract methods.

• Abstract classes can have constructors, while interfaces cannot.

• Interfaces allow for multiple inheritance, while classes can only inherit from one abstract class.

• Abstract class...read more
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Q3. Singleton design pattern. Explain and implement (thread safe)
Ans. 
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Ensure a private static instance variable in the class.

• Provide a public static method to access the instance, creating it if necessary.

• Use synchronized keyword or double-checked locking to make it thread-safe.
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Q4. Merge sort. Explain and implement.
Ans. 
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts each half, and then merges the sorted halves.
• Divide the array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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2 medium leetcode questions were asked

Q1. Difference between polymorphism and inheritance
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Q2. Dsa question related to array
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Q1. Explain about project
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Q2. What did you do in you internship
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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 ??
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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
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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

Coding round was there. Two coding questions were asked to solve in 1 hour. The difficulty was easy to medium.Leetcode questions of arrays and strings.

Q1. It was an online tech interview. There were two panelists. One asked me about my projects and gave me one coding question to solve which was based on matrices. And i was supposed to explain the approach an...read more
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Q2. After solving the question. In the same interview zoom meet HR asked me something about me and my family and thats it.
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