Infosys Senior Software Consultant Interview Questions and Answers

Q1. What are Higher Order functions in Swift
Ans. 
Higher Order functions in Swift are functions that can take other functions as parameters or return functions as results.
• Higher Order functions allow for more concise and readable code.

• Examples include map, filter, and reduce functions in Swift.

• They promote functional programming principles like immutability and declarative code.
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Q2. Explain the MVVM Design Pattern
Ans. 
MVVM is a design pattern that separates the user interface from the business logic and data access layers.
• Model represents the data and business logic

• View displays the user interface elements

• ViewModel acts as an intermediary between the Model and View, handling user interactions and updating the Model
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Q1. How to choose the Design Pattern
Ans. 
Design patterns should be chosen based on the specific problem being solved and the characteristics of the project.
• Identify the problem or requirement that needs to be addressed

• Consider the characteristics of the project such as scalability, maintainability, and flexibility

• Choose a design pattern that best fits the problem and project requirements

• Some common design patterns include Singleton, Factory, Observer, and Str
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Q2. Explain the previous projects & most difficult task you have faced.
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1 hr test with mcq and coding snippet

Q1. What are pointers in c?
Ans. 
Pointers are variables that store memory addresses of other variables in C programming language.
• Pointers are used to manipulate data structures like arrays, linked lists, and trees.

• They can be used to pass values by reference to functions.

• Pointers can also be used to allocate memory dynamically using functions like malloc() and calloc().
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Q2. Write a linked list program.
Ans. 
A linked list program is a data structure that stores a sequence of elements with pointers to the next element.
• Create a Node class with a value and a next pointer

• Create a LinkedList class with a head pointer and methods to add, remove, and traverse nodes

• Example: LinkedList ll = new LinkedList(); ll.add(5); ll.add(10); ll.remove(5);
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Q3. Applications of data structures
Ans. 
Data structures are used to organize and manipulate data efficiently in various applications.
• Data structures are used in databases to store and retrieve data quickly.

• In computer graphics, data structures are used to represent geometric objects.

• Data structures are used in algorithms such as sorting and searching.

• In networking, data structures are used to represent network packets and routing tables.

• Data structures are u...read more
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Q4. Algorithm for merge sort
Ans. 
Merge sort is a divide and conquer algorithm that recursively divides the input array into two halves, sorts them and then merges them.
• Divide the array into two halves

• Recursively sort the two halves

• Merge the sorted halves

• Repeat until the entire array is sorted
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Q5. Cloud computing application in real world in project
Ans. 
Cloud computing is widely used in various industries for data storage, processing, and analysis.
• Cloud computing allows for easy scalability and cost-effectiveness in managing large amounts of data.

• Real-time collaboration and access to data from anywhere are some of the benefits of cloud computing.

• Examples of cloud computing applications in real-world projects include Amazon Web Services (AWS), Microsoft Azure, and Goog...read more
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Q6. Java and nodejs questions
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Q1. Design and technical
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Q1. Role and culture fit
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