Deloitte Digital Software Engineer Interview Questions and Answers

Q1. Explain over all experience
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Q2. Asked question on Core and advance java topic
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Q1. Some advance topic of Java
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Q2. DSA
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Q1. Salary expectation
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Q2. Relocation
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Q1. Java programs related to strings
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Q2. Collections question in java
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Q1. What is inheritance
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Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class (subclass) inherits properties and behaviors from a base class (superclass)

• Can have multiple levels of inheritance, creating a hierarchy of classes

• Example: Animal class can be a base class with Dog and Cat
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Q2. What is polymorphism
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Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.
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Q3. Write a code for string reverse
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Code to reverse a string using array of characters
• Iterate through half of the string and swap characters from start and end

• Use a temporary variable to store the character being swapped

• Handle edge cases like empty string or single character string
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Q1. Intall Mongo Db and perform crud operation
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Q2. Dsa question asked to complete in javascrip
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Q1. Write a Java String program to replace the characters. Write a Java program for Encapsulation. What is the difference between Comparator and Comparable? In between an Interview, the screen was abruptly cl...read more
Ans. 
Java String program to replace characters, Encapsulation program, Comparator vs Comparable difference
• For Java String program to replace characters, use the replace() method to replace specific characters in a string.

• For Encapsulation in Java, use private access modifiers to restrict access to class variables and use public getter and setter methods to access and modify them.

• Comparator and Comparable are interfaces used...read more
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Q1. What is Procedure and package
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Procedure and package are two types of database objects used in Oracle database.
• A procedure is a subprogram that performs a specific action and can be called by other programs.

• A package is a collection of related procedures, functions, and variables that can be used by multiple programs.

• Procedures and packages are stored in the database and can be called from any program that has access to the database.

• Procedures and p...read more
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Q2. View and materilzed view differences
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View is a virtual table while Materialized view is a physical table.
• View is a logical representation of data while Materialized view is a physical copy of data.

• View is updated dynamically while Materialized view needs to be refreshed manually.

• Materialized view is faster for read-heavy operations while View is better for write-heavy operations.

• Materialized view can be indexed while View cannot be indexed.
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Q1. Database types and standards
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Q1. What is DSA used for?
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DSA is used for efficient data organization and manipulation in computer algorithms.
• DSA stands for Data Structures and Algorithms

• It is used to optimize the performance of computer algorithms

• DSA helps in efficient data organization and manipulation

• Examples of DSA include arrays, linked lists, trees, graphs, and sorting algorithms
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Q2. What is programming language used for?
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Programming languages are used to write instructions for computers to execute tasks and solve problems.
• Programming languages are used to create software applications, websites, and games.

• They are used to automate tasks and processes, such as data analysis and machine learning.

• Programming languages are also used in scientific research, financial analysis, and engineering.

• Examples of programming languages include Java, P
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There were 2 questions
One could be solved using hashing
Second one through backtracking

Q1. Question on computer fundamentals and 2 coding questions
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Q1. Basic HR questions this was 5 mins in total
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