Perfect Digital Media Resources Software Developer Interview Questions and Answers

Asking the dp and tree and other

Q1. Asking the project based question and
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Q1. Some question asking base on cultural base and resume based
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Q1. What is closure
Ans. 
A closure is a function that has access to its own scope, the scope in which it was defined, and the global scope.
• A closure is created when a function is defined inside another function.

• The inner function has access to the variables and parameters of the outer function, even after the outer function has finished executing.

• Closures are useful for creating private variables and functions in JavaScript.

• They can also be us...read more
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Q2. What is Encapsulation
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Encapsulation is the process of hiding internal details and providing a public interface for accessing and manipulating data.
• Encapsulation bundles data and methods together into a single unit.

• It helps in achieving data abstraction and data hiding.

• By encapsulating data, we can control access to it and prevent unauthorized modifications.

• Encapsulation promotes code reusability and maintainability.

• Example: A class in objec...read more
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Q3. What is Inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows for code reuse and promotes the concept of hierarchy.

• The class that is being inherited from is called the superclass or base class.

• The class that inherits from the superclass is called the subclass or derived class.

• The subclass can access the public and protected members of the s...read more
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Q4. What is Abstraction
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Abstraction is the process of simplifying complex systems by focusing on essential details.
• Abstraction involves hiding unnecessary details and exposing only relevant information.

• It allows developers to create models or representations that capture the essential aspects of a system.

• Abstraction helps in managing complexity, improving code reusability, and enhancing maintainability.

• For example, in object-oriented programm...read more
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Q5. What is Polymorphism
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Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.
• Polymorphism is a fundamental concept in object-oriented programming.

• It enables code reusability and flexibility.

• Polymorphism can be achieved through method overriding and method overloading.

• Example: A parent class Animal can have multiple child classes like Dog, Cat, and Bird. They can ...read more
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Q1. What is the work in office
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Q2. What is timings in day
Ans. 
Timings in a day refer to the different periods of time that make up a 24-hour day.
• A day is typically divided into morning, afternoon, evening, and night

• Different cultures may have different ways of dividing a day

• Timings can also refer to specific times for events or activities
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Q1. How much salary per month
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Q2. What is timing in the day
Ans. 
Timing in the day refers to the different periods or divisions of time within a 24-hour cycle.
• Timing in the day includes morning, afternoon, evening, and night.

• It helps in organizing daily activities and scheduling tasks.

• Different cultures may have different names or divisions for timing in the day, such as siesta or tea time.

• Timing in the day can also be represented using the 12-hour or 24-hour clock system.
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Q3. How to procesa I share my details
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Q4. Please tell me the process
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Aptitude and coding questions both were included

Q1. Patterns ans series questions were asked
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Q2. Data types in Javascript
Ans. 
Javascript has various data types including string, number, boolean, object, array, null, and undefined.
• Data types in Javascript include string, number, boolean, object, array, null, and undefined.

• Strings are sequences of characters enclosed in quotes.

• Numbers can be integers or floating-point numbers.

• Booleans represent true or false values.

• Objects are collections of key-value pairs.

• Arrays are ordered collections of val...read more
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Q3. Difference between let and var
Ans. 
let is block scoped while var is function scoped in JavaScript.
• let was introduced in ES6 while var has been around since the beginning of JavaScript.

• Variables declared with let are only accessible within the block they are declared in.

• Variables declared with var are accessible throughout the function they are declared in.

• Using let can help prevent variable hoisting issues.

• let is preferred over var for variable declarat
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Q1. Salary discussion
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Round duration - 75 minutes
Round difficulty - Medium

A 24 hour window was given to us and we can attempt the test anytime in between. It included 2 coding questions. One was easy-medium level and the other one was hard. Along with this 7 debugging MCQ's were given, however they were easy.

Q1. 
Minimum and Maximum Candy Cost Problem
Ram is in Ninjaland, visiting a unique candy store offering 'N' candies each with different costs. The store has a special offer: for every candy you purchase, you c...read more
Ans. Using Sorting
Let us apply the way that for minimum cost,  Ram buys the candy with minimum cost and then takes top 'K' expensive candies for free.
 
Similarly, for maximum cost, Ram buys the candy with maximum cost and then takes the top 'K' cheapest candies for free.
• For Minimum:
  • Sort the cost array in increasing order.
    Now, until the candies are available:
    → Start picking candies from the left i.e. the cheapest on...read more
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Q2. 
Swap And Maximize Problem Statement
You are given a circular array consisting of N integers. Your task is to find the maximum sum of the absolute differences between adjacent elements by rearranging the a...read more
Ans. Greedy
• The simplest possible approach will be to sort the array in non-decreasing order and find the answer.
• Since we want to maximize the overall sum of adjacent elements, we can try to bring the elements with greater difference closer.
• In order to do that, we have to arrange the elements in the following order a(1), a(n), a(2), a(n - 1), ….., a(n/2), a(n/2) + 1.
• Out of all the possible combinations, we will get the maxim...read more
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Round duration - 75 minutes
Round difficulty - Hard

Q1. 
Connecting Ropes with Minimum Cost
You are given 'N' ropes, each of varying lengths. The task is to connect all ropes into one single rope. The cost of connecting two ropes is the sum of their lengths. Yo...read more
Ans. Brute Force Approach
Clearly, the rope which is picked up first will be having its length included more than once in the final cost. If we pick a rope of larger length earlier, then we will be adding some extra cost to our final result.
So, the idea is to pick ropes of smaller lengths initially to minimize the impact on our final cost.
So, each time we will be finding two smallest ropes, connecting them and
adding the resu...read more
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Q1. Basic oops concepts with small programs like how to implement interface like that.
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Q1. Salary discussion and basic details are discussed
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