Prolifics Corporation Software Trainee Interview Questions and Answers

30 mins test with 15 questions for 5 mins for detecting pattern complete as much as possible 5 mins it is counted most for next round

Q1. Technical interview
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Q1. One on one hr interview
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Q1. .Net Core 7 & MVC
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Q1. Spark architecture pyspark coding sql coding
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Q1. Spark architecture sql window functions,aggreate functions pyspark data frame coding
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Q1. What is higher order component?
Ans. 
Higher order component is a function that takes a component and returns a new component with additional functionality.
• HOC is a design pattern in React

• It allows code reuse, logic abstraction and composition

• Examples include withRouter, connect, and memo
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Q2. What is context api?
Ans. 
Context API is a way to manage global state in React applications.
• Context API allows components to share data without passing props down the component tree.

• It provides a way to avoid prop drilling and makes code more maintainable.

• Context API consists of two parts: the Provider and the Consumer.

• The Provider component allows data to be passed down to all child components.

• The Consumer component allows components to access
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Q1. Discuss last salary and godhead for final round
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Q1. Discuss only expected package
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Q1. Angular Life Cycle hooks AOT vs JIT Call stack and event loop ngOnchanges vs ngDocheck @hostlistner component interaction content projection call, apply bind
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Duration 30 minutes, topics were related to Javascript and Angular

Q1. Write a program to find count of character from a string. Write a program to sort array without using sort method
Ans. 
Program to count characters in a string and sort an array without using sort method
• Use a loop to iterate through the string and count each character

• For sorting an array, use a loop to compare each element with all other elements and swap if necessary

• Implement a sorting algorithm like bubble sort, insertion sort or quick sort
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Q1. Basic questions about OOP concept
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Q2. Questions based on SQL basic concept
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Q3. Questions about your projects developed by you during college
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Q1. Questions was based on Encapsulation, inheritance, overloading, overriding with real life examples and coding examples
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Q2. How to handle big amount of data using Interfaces like Hadoop
Ans. 
Hadoop can handle big data by distributing it across multiple nodes and processing it in parallel.
• Hadoop uses HDFS to store data across multiple nodes

• MapReduce is used to process data in parallel

• Hadoop ecosystem includes tools like Hive, Pig, and Spark for data processing

• Hadoop can handle structured, semi-structured, and unstructured data

• Example: Facebook uses Hadoop to store and process petabytes of user data
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Binary search tree coding test by sharing your screen.
Write SQL query based on given scenarios by interviewer.
How to sort a list without taking any help from any built in method ?

Q1. Basic HR questions about preferred job locations and about you & your family
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Round duration - 60 minutes
Round difficulty - Medium

Mcq + Data structures questions

Q1. 
Maximum Sum Subarray Problem Statement
Given an array of integers, find the maximum sum of any contiguous subarray within the array.
Example:
Input:
array = [34, -50, 42, 14, -5, 86]
Output:
137
Exp...read more
Ans. Brute Force Approach
1. Create a nested loop. The outer loop will go from i = 0 to i = n - k. This will cover the starting indices of all k-subarrays
2. The inner loop will go from j = i to j = i + k - 1. This will cover all the elements of the k-subarray starting from index i
3. Keep track of the maximum element in the inner loop and print it.
Space Complexity: O(1)Explanation:
O(1) because the extra space being used (looping vari...read more
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Round duration - 70 minutes
Round difficulty - Medium

Standard System Design round

Q1. Design a Doctor Appointment System and provide some test cases.
Ans. 
Tip 1 : Implement using OOPs 
Tip 2 : Try to tell your approach to the interviewer as much as you can side by side
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Round duration - 90 minutes
Round difficulty - Medium

Interview of DSA + OOPS + Databse(SQL query) + Operating System

Q1. 
Left View of a Binary Tree
Given a binary tree, your task is to print the left view of the tree. The left view of a binary tree contains the nodes visible when the tree is viewed from the left side.
Inpu...read more
Ans. Recursive Approach
This problem can be solved through recursion.We will maintain max_level variable which will keep track of maxLevel and will pass current level in recursion as argument. Whenever we see a node whose current level is more than maxLevel then we will print that node as that will be first node for that current level. Also update maxLevel with current level.
Space Complexity: O(n)Explanation:
O(N), where ‘N’...read more
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Q2. What is the difference between CHAR and VARCHAR2 data types in SQL?
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Q3. What are the various types of constructors in C++?
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Q4. What is the difference between overloading and overriding?
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Round duration - 60 minutes
Round difficulty - Easy

Hr round - normal hr questions + situational 

Thoughtworks community discussion

Q1. Why should we hire you?
Ans. 
Tip 1 : Read all Thoughtworks community page and be honest

Tip 2 : Be open-minded and answer whatever you are thinking, in these rounds I feel it is important to have opinion.

Tip 3 : The cross-questioning can go intense sometimes, think before you speak.
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Q1. Basic Mainframe questions and some advanced scenario based questions
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Q1. The usual how,what,why MR round questions
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Q1. What are your salary expectations?
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Q2. Share details of your previous job.
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Q3. Why should we hire you?
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Q4. Why are you looking for a change?
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Q5. Tell me about yourself.
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Q6. Where do you see yourself in 5 years?
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