Next Wave India Software Engineer Trainee Interview Questions and Answers

Q1. Basics of kotlin, sealed class, viewmodel implementation,
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Q2. Caching mechanism
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Questions on dsa, coding question, overall good experience and so on

Q1. Binary search and sorting
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Q2. Prime number coding question
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Technical aspects about linked list,trees, stacks

Topic related to humanities

Topic about global warming

Q1. Tell me about yourself? Why choose python and tell me about projects?
Ans. 
I am a software developer with a passion for Python. I have worked on various projects showcasing my skills.
• I chose Python because of its simplicity, readability, and vast community support.

• Python's extensive libraries and frameworks make it suitable for a wide range of applications.

• I have worked on projects like building web applications using Django, data analysis using pandas, and automation scripts using Selenium.

• O...read more
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Q2. Why gaotek? Difference between Application and System Software? Tell me about project you done?
Ans. 
I chose Gaotek because of its reputation in the software development industry.
• Gaotek is known for its cutting-edge technology and innovative solutions.

• The company has a strong focus on professional growth and learning opportunities.

• Gaotek's work culture promotes collaboration and teamwork.

• I was impressed by the positive reviews and success stories of Gaotek's previous interns and employees.
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Q3. Difference between python and C
Ans. 
Python is a high-level interpreted language while C is a low-level compiled language.
• Python is dynamically typed while C is statically typed.

• Python has automatic memory management while C requires manual memory management.

• Python is easier to learn and write code in while C is more efficient and faster.

• Python is used for web development, data analysis, and machine learning while C is used for system programming and embe...read more
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Q4. Why you can go with unpaid internship??
Ans. 
Unpaid internships can provide valuable learning opportunities and networking connections.
• Gain practical experience and enhance skills

• Build a professional network

• Explore different career paths

• Gain exposure to real-world projects

• Increase chances of future employment

• Learn from experienced professionals

• Develop a strong work ethic

• Demonstrate dedication and commitment
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Round duration - 70 Minutes
Round difficulty - Medium

Timing was 9:15AM. Platform was not very good. Questions were not well explained.

Q1. 
Merge Overlapping Intervals Problem Statement
Given a specified number of intervals, where each interval is represented by two integers denoting its boundaries, the task is to merge all overlapping interv...read more
Ans. Brute Force
1. We are given the function MERGEINTERVALS(), which takes a 2D vector representing the vector of intervals and returns another 2D vector which is the vector of merged intervals.
2. We create another function ISOVERLAP() to check if the current interval overlaps with the other interval.
3. Now we create an empty 2D vector “RES” to store finally merged intervals and another boolean vector “VIS” to mark if the current in...read more
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Q2. 
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...read more
Ans. Bactracking
Approach: We can start the traversal of the paths from the rat’s starting position, i.e. (0,0) keeping track of the visited cells during the traversal. We will recursively go through all the paths possible until the last index of the grid (destination) is reached, and add the path information using which the rat successfully reached the end.
 
Algorithm is as follows:
 
1. Take the starting position of th...read more
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Q3. 
Problem: Permutations of a String
Given a string STR consisting of lowercase English letters, your task is to return all permutations of the given string in lexicographically increasing order.
Explanatio...read more
Ans. Backtracking
The idea is to fix a character at a position and then find the permutations for rest of the characters.
Make a list ‘ans’ which will contain the permutations of the given string.
 
Algorithm:
Let’s define a function generatePermutaionsHelper(Str, l, r). This function generates the permutations of the substring which starts from index  ‘l’ and ends at index  ‘r’.
• Call the function: generatePermutai...read more
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Basic aptitude test, 2 coding questions based on arrays. One was easy other was hard

Q1. Tell me about arrays
Ans. 
Arrays are a data structure that stores a collection of elements of the same data type in contiguous memory locations.
• Arrays have a fixed size determined at the time of declaration.

• Elements in an array are accessed using an index starting from 0.

• Arrays can store primitive data types or objects.

• Example: String[] names = {"Alice", "Bob", "Charlie"};
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Q2. How does a linked list function
Ans. 
A linked list is a data structure where each element points to the next element in the sequence.
• Each element in a linked list, called a node, contains data and a reference to the next node in the sequence.

• Linked lists can be singly linked (each node points to the next node) or doubly linked (each node points to both the next and previous nodes).

• To traverse a linked list, you start at the head node and follow the refere...read more
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