SACHA Engineering Graduate Trainee Interview Questions and Answers

10 dsa 20 aptitude questions

Easy basic coding que like find odd number ,middle ele of arr

Q1. 3 technical ques
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Q2. Constructor vs method , api call process
Ans. 
Constructor is a special method used to initialize an object, while a method is a function that performs a specific task.
• Constructors are called automatically when an object is created, while methods need to be called explicitly.

• Constructors have the same name as the class, while methods can have any name.

• Constructors can have parameters, while methods may or may not have parameters.

• API call process involves making req...read more
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Basic questions on quantitative aptitude, reasoning,and English

Basic coding questions on any language you prefer

Interview was good
It was very easy
They first ask self introduction and then ask your primary skill
Difference between abstract class and interface
Difference between final finally and finalize
What is hashtable
Difference between hashtree and hashmap
Difference between primary key and foreign key
What is use of foreign key

Good and easy to crack this round

Q1. Good and easy to crack all question asks related to resume
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It Was easy. Contain quantitative aptitude, reasoning and English grammar

Basic coding questions on any language you prefer

Q1. It was very easy They first ask self introduction and then ask your primary skill Difference between abstract class and interface Difference between final finally and finalize What is hashtable Differenc...read more
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General aptitude questions -duration -30min

Google form , basic coding questions

Q1. Diff between final finally finalize
Ans. 
Final is an adjective, finally is an adverb, and finalize is a verb.
• Final is used to describe something that is last or ultimate (e.g. final exam)

• Finally is used to indicate the end of a series of events or actions (e.g. finally, we reached our destination)

• Finalize is used to complete or finish something (e.g. finalize a contract)
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Q2. Explain JDBC-SQL
Ans. 
JDBC-SQL is a Java API for connecting and executing SQL queries on a database.
• JDBC stands for Java Database Connectivity

• It allows Java programs to interact with databases using SQL

• JDBC provides classes and interfaces for connecting to a database, sending queries, and retrieving results

• Example: Establishing a connection to a database, creating a statement, executing queries, and processing results
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Easy Aptitude Test on Google Form

Coding test was also pretty easy, and basic questions were asked

Q1. Aptitude Questions
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Q2. OOP Question in Cpp
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Basic questions on distance, profit-loss, percentage, permutation and combination, work and time, etc easy to moderate level questions

Array operations, String operations, leetcode easy level questions

Q1. Difference between abstraction and encapsulation?
Ans. 
Abstraction focuses on hiding the implementation details while encapsulation focuses on bundling the data and methods that operate on the data into a single unit.
• Abstraction is about hiding the complexity of the implementation and showing only the necessary details to the user.

• Encapsulation is about bundling the data and methods that operate on the data into a single unit.

• Abstraction allows for creating simple interfac...read more
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Q2. Joins in SQL with example
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q1. Database connectivity code implementation
Ans. 
Database connectivity code implementation involves establishing a connection between a database and a software application.
• Use appropriate database drivers for the specific database management system (e.g. JDBC for MySQL, SQLite3 for SQLite).

• Establish a connection using connection strings with necessary credentials (username, password, database name, host).

• Execute SQL queries to interact with the database (e.g. SELECT,...read more
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Q2. Tree traversal code implementation
Ans. 
Tree traversal code implementation involves visiting each node in a tree data structure in a specific order.
• There are three main types of tree traversal: in-order, pre-order, and post-order.

• In-order traversal visits the left subtree, then the root, then the right subtree.

• Pre-order traversal visits the root, then the left subtree, then the right subtree.

• Post-order traversal visits the left subtree, then the right subtre...read more
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Q1. Sql questions, joins, primary key, foreign key. Inner queries
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Q2. Core Java questions
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