CGI Group Software Engineer Interview Questions and Answers

Yes, I am open to relocating to Bangalore for this opportunity, as it aligns with my career goals and personal growth.

• Bangalore is a major tech hub, offering numerous opportunities for networking and professional development.

• Relocating would allow me to work closely with industry leaders and innovative companies.

• I have researched the cost of living and found it manageable, making the move feasible.

• I am excited abo...read more

Marker interfaces are used to indicate a specific property or behavior of a class without defining any methods.

• Marker interfaces do not contain any methods or fields.

• They are used to provide metadata about a class.

• Common examples include Serializable and Cloneable in Java.

• They help in implementing design patterns like Singleton.

Two common design patterns used in projects are Singleton and Observer patterns.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.

Time complexity of hashmap operations is O(1) on average, but can be O(n) in worst case.

• HashMap operations like get, put, remove have constant time complexity O(1) on average due to hashing

• In worst case scenario, all keys hash to the same bucket resulting in linear search O(n)

• Rehashing occurs when load factor exceeds a threshold, increasing time complexity temporarily

Implemented logging in Spring Boot application using SLF4J and Logback

• Added dependencies for SLF4J and Logback in pom.xml

• Configured logback.xml for logging levels and appenders

• Injected Logger instances using @Autowired annotation in classes

• Used logger.debug(), logger.info(), logger.error() methods for logging

Use streams to remove repeating letters in a string

• Convert the string to a character array

• Use a stream to filter out repeating characters

• Collect the characters back into a string