SBS Senior Software Developer Interview Questions and Answers

Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

• Start from the first element and compare it with the next element

• If the next element is smaller, swap them

• Repeat this process for all elements in the array

• Continue this process until no more swaps are needed

A program to print all prime numbers

• Take input from user for range of numbers

• Loop through the range and check if each number is prime

• Print the prime numbers

Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

• Hashmap uses a hash function to map keys to indices in an array.

• Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

• Examples of hashmap implementations include Java's HashMap class and Python's dict type.

Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

• Inheritance allows code reuse and promotes code organization.

• The existing class is called the parent or superclass, and the new class is called the child or subclass.

• The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

• For...read more

Cordova is a mobile application development framework that allows developers to build apps using web technologies.

• Cordova enables developers to create cross-platform mobile apps using HTML, CSS, and JavaScript.

• It provides access to native device APIs, allowing developers to use device features like camera, accelerometer, etc.

• Cordova apps can be built for multiple platforms like iOS, Android, Windows, etc.

• It was previou...read more

SDLC stands for Software Development Life Cycle, which is a process used to design, develop, and test software.

• The steps in SDLC are planning, analysis, design, development, testing, deployment, and maintenance.

• During planning, the project scope and requirements are defined.

• Analysis involves gathering and analyzing user requirements.

• Design involves creating a detailed plan for the software.

• Development involves coding a...read more

A foreign key is a column or a set of columns in a table that refers to the primary key of another table.

• It establishes a relationship between two tables.

• It ensures referential integrity.

• It helps in maintaining data consistency.

• It can be null or have duplicate values.

• Example: A 'customer_id' column in an 'orders' table that refers to the 'id' column in a 'customers' table.