Techigai SDE (Software Development Engineer) Interview Questions and Answers

They asked some general Quantitative and logical questions and code snippets.

Q1. String Reverse and Two Sum
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Q2. Related to my projects and Tech Stacks
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Q1. This is the Second technical round. The interviewer asked about everything from my project.
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Q2. Asked some sql queries like joins and set operation
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Q1. Given the react machine coding example
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Q1. Explain about your projects
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Q1. I am interested but I am fasher
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Q2. I am interested but I am fasher
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In the coding test, there were 2 problems based on arrays and hashing (easy to medium level leetcode)

Q1. Several OOP questions were asked.... like, Can we have a class inside an interface? Can we have a static constructor? Can we have multiple main methods?
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Q2. DBMS question: Normalization questions and keys concepts.
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Q1. DSA question (stack based) You have a stack full of numbers, you have to arrange them in ascending order in the same stack without using any other data structure.
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Q2. OS and DBMS questions(sharding, semaphores, etc.)
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Q1. Questions based on Consultadd principles.
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Assusual apti questions from every topics

1. 1 coding Question we can use java, python etc to solve and
2. another 1 sql question

One question based on any one data structure (in my case I solved stack &queue combinely)

Q1. They ask about Ur background qualifications and verify
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Q2. And then explain the process of company and ask everything is ok for us like bond etc
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Q3. Then sheduled interview on the next day
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Q1. She(hr) introduced herself
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Q2. Then she asked me to introduce myself
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Q3. What are the programming languages u know ( I said I'm strong in java)
Ans. 
I am strong in Java programming language.
• Proficient in Java programming language

• Experience in developing applications using Java

• Knowledge of Java frameworks like Spring and Hibernate
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Q4. Rate Urself in it out of 5
Ans. 
I rate myself 4 out of 5 in IT skills.
• Proficient in programming languages such as Java, Python, and C++

• Experienced in software development and debugging

• Familiar with database management systems like MySQL and MongoDB
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Q5. She asked me to explain lambda expressions in java
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Q6. Explain detaily about Four pillars of oops
Ans. 
The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hides the complex implementation details and only shows the necessary features.
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Q7. Share Ur screen and get this output (pattern program)
Ans. 
Print a specific pattern using loops
• Use nested loops to print the desired pattern

• Increment the number of characters printed in each row

• Adjust the spacing to create the desired pattern
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Q8. Shorterm and long-term goals
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Q9. If your assigned to a task how can you complete it
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Q10. Exception handling concept (she specifically asked about throw, throws, finally keyword)
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Q11. Explain about Static keyword
Ans. 
Static keyword is used in programming languages to declare variables, functions, or classes that are shared among all instances of a class or are only accessible within a specific scope.
• Static variables retain their values between function calls

• Static functions can only be called within the same file

• Static classes cannot be instantiated and are used for grouping related methods and properties
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