EarlySalary Services Interview Questions and Answers

Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

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

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Classes and objects are used to create reusable code and organize data

• Example: In a banking system, a 'Customer' object may have attributes like name and account balance, with methods to deposit and withdraw mone...read more

Reverse a string by iterating through the characters and swapping them

• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet

Find the missing number in an array containing numbers from 1 to n.

• Iterate through the array and calculate the sum of all numbers from 1 to n.

• Calculate the sum of all numbers in the given array.

• Subtract the sum of array from the sum of all numbers to find the missing number.

Design principles are fundamental concepts used to guide the process of designing products or systems.

• Design principles help ensure consistency, usability, and aesthetic appeal in the final product.

• They often include principles such as simplicity, consistency, hierarchy, balance, and emphasis.

• For example, the principle of simplicity in design aims to eliminate unnecessary elements and focus on the essential features.

• Consistency ensures that elements like colors, fonts, and sp...read more

A collection is a group of items or objects gathered together for a specific purpose or to be displayed.

• A collection can consist of various items such as stamps, coins, artwork, or books.

• Collections are often curated and organized by individuals based on personal interests or hobbies.

• Some collections may have significant monetary or sentimental value.

• Collections can also refer to the act of gathering or accumulating items over time.