Info Edge Software Developer Interview Questions and Answers

Rearrange array elements based on their differences from a given integer.

• Calculate the differences between each element and the given integer.

• Sort the elements based on their differences while maintaining the original order for elements with the same difference.

• Implement a function to rearrange the array elements as per the given criteria.

The task is to find all nodes in a binary tree that are at a distance K from a given node.

• Traverse the binary tree to find the given node

• From the given node, perform a depth-first search to find all nodes at distance K

• Use a list to store the values of the nodes at distance K

• Return the list of values in any order

Check if two strings are anagram pairs by comparing the frequency of characters.

• Create character frequency maps for both strings

• Compare the frequency of characters in both maps

• Return True if the frequency of characters is the same for both strings, else return False

Print a triangle pattern of numbers based on a given number 'N'.

• Iterate through each row and print the numbers accordingly

• Use spaces to center-align the numbers in each row

• Increment the numbers in each row as per the pattern

OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOP focuses on creating objects that interact with each other to solve problems.

• Encapsulation: Objects can hide their internal state and require interaction through defined interfaces.

• Inheritance: Objects can inherit attributes and methods from other objects.

• Polymorphism: Objects can take on different forms or have multiple behaviors.

• E...read more

Web server serves static content over HTTP, while application server runs dynamic content and business logic.

• Web server handles HTTP requests and responses, serving static content like HTML, images, and CSS.

• Application server executes business logic, runs dynamic content, and interacts with databases.

• Web server examples include Apache, Nginx, while application server examples include Tomcat, JBoss.

• Web server focuses on handling HTTP protocol, while application server focuses ...read more

SQL query to find the nth highest salary

• Use the 'SELECT DISTINCT' statement to get unique salary values

• Order the salaries in descending order using 'ORDER BY' clause

• Use 'LIMIT' and 'OFFSET' to get the nth highest salary

The internet is a global network of interconnected computers that communicate using standardized protocols.

• The internet is made up of a vast number of interconnected networks of computers.

• Data is transmitted over the internet using protocols such as TCP/IP.

• Websites are hosted on servers connected to the internet, and users access them using web browsers.

• Internet Service Providers (ISPs) provide access to the internet for users through various technologies like DSL, cable, or ...read more