Apexon Associate Engineer Interview Questions and Answers

Basics analytical questions

Q1. Core java and basics sql
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Q2. Html,CSS, basics questions
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Q1. Tell me about your self
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Q2. Salary discussions
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Basic coding in Java. MySql, HTML.

Adavance coding in Java programming.

Q1. About salary. Location.
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6 sections with section timings
Aptitude 10 questions
Reasoning 10 questions
Coding 1(30min)
Data structure 10
Pseudo Code 10
About Company 5

Topic 1-drone
Topic - self driving cars

Q1. Program to count spaces in string Program to print only digits in string
Ans. 
Program to count spaces and print digits in string
• For counting spaces, loop through the string and check for ' ' character

• For printing digits, loop through the string and check for '0' to '9' characters

• Use isdigit() function in Python to check for digits

• Use a counter variable to keep track of spaces

• Use a separate string variable to store digits and print it at the end
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Q2. Why string is immutable
Ans. 
String is immutable because it cannot be changed once created.
• Immutable objects are safer to use in multi-threaded environments

• String pool in Java is possible because of immutability

• StringBuffer and StringBuilder are mutable alternatives to String
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Q3. About Constructor Dictionary Access modifiers in python
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Q1. Which is difficult program that you wrote in python Which is difficult program wrote in c Dictionary use with code implications
Ans. 
Difficult program in Python: A web scraper to extract data from dynamic websites. Difficult program in C: A program to implement a custom data structure.
• Python program required knowledge of web scraping libraries like BeautifulSoup and Selenium

• C program required understanding of memory management and pointers

• Python program had to handle dynamic website elements and login authentication

• C program had to implement a custo...read more
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Q1. Self intro About Company Hobbies Related to resume
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Q1. Self intro Intrested field
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Arrays sort using largest element

Q1. Tell about yourself
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Q1. What is a stack and implement it
Ans. 
A stack is a linear data structure that follows the Last In First Out (LIFO) principle.
• Elements are added to the top of the stack and removed from the top as well.

• Common operations include push (add element to top) and pop (remove element from top).

• Stacks can be implemented using arrays or linked lists.

• Example: undo/redo functionality in a text editor.

• Example: function call stack in programming languages.
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Q2. What is hashing and does it have key?
Ans. 
Hashing is a process of converting data into a fixed-size output. It has a key that is used to access the data.
• Hashing is used to store and retrieve data quickly.

• It uses a hash function to generate a unique key for each input data.

• The key is used to access the data in constant time.

• Hashing is used in password storage, data indexing, and cryptography.

• Examples of hash functions include MD5, SHA-1, and SHA-256.
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All the aptitude topics were asked

Q1. Asked about java questions and about my projects in resume
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