Ivy Mobility Solutions Software Engineer Interview Questions and Answers

Layout optimisation in Xamarin forms involves improving performance and user experience by efficiently arranging UI elements.

• Use ListView instead of StackLayout for long lists to improve performance.

• Avoid nesting multiple layouts within each other to reduce complexity.

• Utilize Grid layout for more complex UI designs.

• Use RelativeLayout for positioning elements relative to each other.

• Implement caching mechanisms for frequ

Test attribute is used to define a test method, while TestCase attribute is used to define a test case class.

• Test attribute is used to mark a method as a test method in a test class.

• TestCase attribute is used to mark a class as a test case class containing multiple test methods.

• Test attribute is used in frameworks like NUnit, JUnit, etc.

• TestCase attribute is used in frameworks like NUnit, JUnit, etc.

Program to find the largest and smallest integer in a program

• Iterate through the array of integers to find the largest and smallest values

• Initialize variables to store the largest and smallest values, update them as needed

• Handle edge cases like empty array or array with only one element

• Return the largest and smallest values found

HashMap is a data structure that stores key-value pairs using hashing. An abstract class is a class that cannot be instantiated.

• HashMap uses hashing to store key-value pairs for efficient retrieval.

• Abstract classes cannot be instantiated and can have abstract methods that must be implemented by subclasses.

• Example: HashMap map = new HashMap<>();

LinkedList is preferred for constant modification due to faster insertion and deletion times.

• LinkedList is preferred for constant modification because it has faster insertion and deletion times compared to ArrayList.

• LinkedList allows for easy insertion and deletion of elements without the need to shift other elements, making it more efficient for constant modifications.

• ArrayList is better for random access and iteratin...read more

Distributed system design involves breaking down a system into smaller components that communicate and coordinate with each other over a network.

• Decompose the system into smaller services that can run independently

• Use messaging protocols like MQTT or AMQP for communication

• Implement fault tolerance and scalability measures

• Consider data consistency and synchronization across nodes

• Examples: microservices architecture, Apa

Create a class with other objects as immutable

• Use final keyword to make class immutable

• Make all fields private and final

• Do not provide setter methods, only getter methods

• If class contains mutable objects, make sure to return a copy of them in getter methods

Redux is a predictable state container for JavaScript apps, enabling centralized state management and unidirectional data flow.

• Centralized Store: Redux maintains a single store that holds the entire state of the application.

• Actions: Actions are plain JavaScript objects that describe changes to the state. Example: { type: 'ADD_TODO', payload: 'Learn Redux' }

• Reducers: Reducers are pure functions that take the current sta...read more