Helios Spectra Junior Developer Interview Questions and Answers

It was quite taff and easy based on ur preparation

Q1. I can't share here
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Q2. Mostly asked basics and resume u added fields
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Q1. It was about ur being supportive
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Q2. Salary discussion
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Q1. About backgroud etc
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General apptitude and techincal mcq's

Data structres , cp and adavnce programming

Q1. Whats is data structures ?
Ans. 
Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.
• Data structures define how data is stored, accessed, and manipulated in a computer program.

• Examples include arrays, linked lists, stacks, queues, trees, and graphs.

• Choosing the right data structure is crucial for optimizing performance and memory usage in software development.
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Q2. What is merge sort ?
Ans. 
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts them separately, and then merges them back together in sorted order.
• Divide the input array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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Q1. Linklist vs arraylist
Ans. 
LinkedList is better for frequent insertions and deletions, ArrayList is better for random access.
• LinkedList uses pointers to connect elements, ArrayList uses a dynamic array.

• LinkedList is slower for random access but faster for insertions and deletions.

• ArrayList is faster for random access but slower for insertions and deletions.

• Example: LinkedList is used in undo functionality where elements are frequently added and ...read more
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Q1. Reverse array using java 8
Ans. 
Using Java 8, reverse an array of strings
• Use Arrays.stream() to convert the array to a stream

• Use Collections.reverse() to reverse the stream

• Use Collectors.toList() to convert the stream back to a list
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Q1. Event bubbling , dependency injection
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Q2. New features of es6,
Ans. 
ES6 introduced new features to improve JavaScript syntax and functionality.
• Arrow functions for concise syntax

• Let and const for block-scoped variables

• Template literals for string interpolation

• Destructuring for easy object and array manipulation

• Default parameters for function arguments

• Spread and rest operators for easy array manipulation

• Classes for object-oriented programming

• Promises for asynchronous programming

• Modules f
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60 minutes 3 sections of attitude test

5 Questions 3 to Clear for an Technical interview

Q1. Basic stuff related to DSA and python
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Q1. Bond, Ready to relocate, etc basic HR stuff
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1 hr was the aptitude test coding and dbms

Q1. 1. Introduce urself, basic coding knowledge and dbms
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Q2. Strength and weakness
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Q1. What is Object-oriented Programming ?
Ans. 
Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Example: In a banking system, a 'Customer' class can have attributes like name and account balance, and methods like deposit and withdraw.
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Q2. Explain about your Projects ?
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