Newfold Digital Technical Trainee Interview Questions and Answers

Round duration - 150 minutes
Round difficulty - Medium

It was an Aptitude test and Technical objective test of 60 minutes followed by a Coding test of 90 minutes. The round started at 2:00 PM. Candidates who cleared this round were shortlisted for the next round.

Q1. Maximum Sum path of a binary tree.
You are given a binary tree having 'N' nodes. Each node of the tree has an integer value. Your task is to find the maximum possible sum of a simple path between a...read more
Ans. Recursive Solution
First of all, we need to observe that for any simple path in a Binary tree, there is one and only one node at the maximum height. So, the idea is to fix each node as the highest node in a path and then find the maximum sum path having the current node as the highest node. The final answer will be the maximum value among all the path sum values for each node. To find the maximum sum path for a particul...read more
Answered by CodingNinjas
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Round duration - 30 minutes
Round difficulty - Medium

This was the technical interview round it started at 12:00 pm, here we were asked to explain the codes we wrote in the coding test and after that, we were given a coding problem for which we needed to write a pseudocode solution and explain it to the interviewer. The interviewer was quite polite and understanding even if we got stuck while writing the code he didn't rush the interview. Candidates who cleared this round were shortlisted for the HR round.

Q1. Properties of MST in a Undirected Graph
G = (V,E) is an undirected simple graph in which each edge has a distinct weight, and e is a particular edge of G. Which of the following statements about the minimu...read more
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Round duration - 20 minutes
Round difficulty - Medium

This round started at 4:00 pm, it was also conducted on Microsoft Teams. In this round, we were asked the basic HR questions.
Basically, the interviewer just wanted to test our confidence and communication skills.

Q1. Jumping Game
You are given ‘n’ carrots numbered from 1 to ‘n’. There are k rabbits. Rabbits can jump to carrots only with the multiples of Aj(Aj,2Aj,3Aj…) for all rabbits from 1 to k.
Whenever Rabbit rea...read more
Ans. 
Tip 1: Your answer should be professional
Tip 2 : Mention all your good points in the answer
 
Answered by CodingNinjas
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Q1. What is multithreading
Ans. 
Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for better performance and resource utilization.
• Multithreading allows multiple threads to run concurrently within the same process.

• Each thread has its own stack and program counter, but shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of multithreading include...read more
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Q2. What is hash map
Ans. 
A hash map is a data structure that stores key-value pairs and allows for efficient retrieval of values based on keys.
• Hash maps use a hash function to map keys to indexes in an array, allowing for constant time retrieval of values.

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

• Example: HashMap map = new HashMap<>()
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Q1. Oops concepts and related questions
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Q1. Asked Technical questions along with some hr questions
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Q1. Self introduction
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Q2. As per experience questions
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Q1. What is polymorphism and method overriding
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data. Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.
• Polymorphism allows different classes to be treated as instances of a common superclass.

• Method overriding is a feature that allows a subclass to provide a specific implementation of a method that...read more
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Q2. What is encaplusulation and explain it with an example
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and only exposing the necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• An example of encapsulation is a class in object-oriented programming that has private variables and public methods
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Q1. About project related
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Q2. Focuses on Java skills
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The question are very normal

Q1. Why should we hire your
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Q2. Where you seen your after 5 year
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