Capgemini Software Engineer Interview Questions and Answers

Pseudocode for a basic DSA question

• Start by defining the problem statement and input/output requirements

• Identify the key data structures and algorithms needed to solve the problem

• Write step-by-step instructions in pseudocode to solve the problem

• Test the pseudocode with sample inputs to ensure correctness

The main method in Java cannot be overridden, but it can be overloaded in subclasses.

• The main method is static, so it belongs to the class, not instances.

• Overriding requires an instance of the superclass, which is not applicable for static methods.

• You can overload the main method, e.g., public static void main(String[] args, int num) {}

• When you run a Java application, the JVM looks for the main method with the exa...read more

POST creates resources, while PUT updates existing ones. Both are HTTP methods used in RESTful APIs.

• POST is used to create a new resource on the server. Example: POST /users creates a new user.

• PUT is used to update an existing resource. Example: PUT /users/1 updates the user with ID 1.

• POST can result in multiple resources being created, while PUT is idempotent, meaning repeated calls have the same effect.

• POST does...read more

EMR stands for Electronic Medical Record, a digital version of a patient's paper chart.

• EMR is used by healthcare providers to store patient information electronically.

• It includes medical history, diagnoses, medications, treatment plans, immunization dates, allergies, radiology images, and laboratory test results.

• EMRs can be accessed and shared by authorized providers and staff across different healthcare organizat...read more

Slicing in Python is a way to extract a subset of elements from a list, tuple, or string.

• Slicing is done using square brackets and specifying start, stop, and step values.

• The syntax for slicing is myList[start:stop:step].

• Slicing can be used to extract a range of elements or every nth element from a sequence.

Factorial code in Python using recursion

• Define a function that takes an integer as input

• Base case: if input is 0, return 1

• Recursive case: return input multiplied by factorial of input-1

• Example: def factorial(n): return 1 if n == 0 else n * factorial(n-1)

Retrieve the 3rd highest salary from a table using SQL query with various methods.

• Use the 'DISTINCT' keyword to avoid duplicate salaries: SELECT DISTINCT salary FROM employees.

• Use 'ORDER BY' to sort salaries in descending order: ORDER BY salary DESC.

• Use 'LIMIT' with an offset to get the 3rd highest salary: LIMIT 1 OFFSET 2.

• Alternatively, use a subquery: SELECT MAX(salary) FROM employees WHERE salary < (SELECT M...read more

A constructor is a special method in a class that initializes objects when they are created.

• Constructors have the same name as the class they belong to.

• They do not have a return type, not even void.

• Constructors can be overloaded, allowing multiple ways to initialize an object.

• Example: In Java, 'public ClassName()' is a default constructor.

• If no constructor is defined, a default constructor is provided by the compi...read more