Capgemini Engineering Interview Questions, Process, and Tips

Comparable is an interface used for natural ordering while Comparator is an interface used for custom ordering.

• Comparable is implemented by the class whose objects need to be sorted

• Comparator is implemented by a separate class to define custom sorting logic

• Comparable uses compareTo() method to compare objects

• Comparator uses compare() method to compare objects

• Example: String class implements Comparable interface for nat...read more

Memory is allocated to objects dynamically during runtime based on their size and type.

• Memory allocation is done using the 'new' keyword in languages like Java and C++.

• In languages like Python, memory allocation is handled automatically by the interpreter.

• Memory allocation can also be done using functions like malloc() and calloc() in C.

• Memory is released using the 'delete' keyword in languages like Java and C++.

• Memory...read more

I am comfortable working with multiple languages and have experience in doing so.

• I have experience working with languages such as Java, Python, C++, and JavaScript.

• I am able to quickly adapt to new languages and learn them efficiently.

• I understand the importance of proper documentation and commenting in code to ensure readability for others.

• I have worked on projects that required integration of multiple languages, such...read more

To get unique elements from a list, use set() function.

• Convert the list to a set using set() function

• Convert the set back to list using list() function

• Example: list(set(['apple', 'banana', 'apple', 'orange'])) will return ['apple', 'banana', 'orange']

Hash table is a data structure that maps keys to values using a hash function.

• Hash function maps keys to indices in an array

• Collisions can occur, which can be resolved using techniques like chaining or open addressing

• Lookup, insertion, and deletion operations have an average time complexity of O(1)