Add office photos
Engaged Employer

LTIMindtree

3.8
based on 21.1k Reviews
Filter interviews by

10+ Nestwell Technologies Interview Questions and Answers

Updated 24 Oct 2024
Popular Designations

Q1. Sum of Squares of First N Natural Numbers Problem Statement

You are tasked with finding the sum of squares of the first N natural numbers for given test cases.

Input:

The first line contains an integer 'T', the...read more
Ans.

Calculate the sum of squares of the first N natural numbers for given test cases.

  • Read the number of test cases 'T'

  • For each test case, read the value of 'N'

  • Calculate the sum of squares of the first 'N' natural numbers

  • Output the result for each test case

View 2 more answers

Q2. Reverse a String Problem Statement

Given a string STR containing characters from [a-z], [A-Z], [0-9], and special characters, determine the reverse of the string.

Input:

The input starts with a single integer '...read more
Ans.

Reverse a given string containing characters from [a-z], [A-Z], [0-9], and special characters.

  • Iterate through the characters of the string from end to start and append them to a new string to get the reversed string.

  • Use built-in functions like reverse() or StringBuilder in languages like Python or Java for efficient reversal.

  • Ensure to handle special characters and numbers while reversing the string.

  • Consider edge cases like empty string or strings with only one character.

View 1 answer

Q3. Valid Parentheses Problem Statement

Given a string 'STR' consisting solely of the characters “{”, “}”, “(”, “)”, “[” and “]”, determine if the parentheses are balanced.

Input:

The first line contains an integer...read more
Ans.

Check if given strings containing parentheses are balanced or not.

  • Use a stack to keep track of opening parentheses

  • Iterate through the string and push opening parentheses onto the stack

  • When a closing parentheses is encountered, pop from the stack and check if it matches the corresponding opening parentheses

  • If stack is empty at the end and all parentheses are matched, the string is balanced

Add your answer

Q4. Change Start Node Problem Statement

You are provided with a singly linked list and an integer K. The objective is to make the Kth node from the end of the linked list the starting node of the linked list.

Input...read more

Ans.

Given a singly linked list and an integer K, rearrange the list such that the Kth node from the end becomes the starting node.

  • Traverse the linked list to find the length and the Kth node from the end.

  • Update the pointers to rearrange the list accordingly.

  • Handle edge cases like K being equal to 1 or the length of the list.

Add your answer
Discover Nestwell Technologies interview dos and don'ts from real experiences

Q5. Chocolate Distribution Problem

You are given an array/list CHOCOLATES of size 'N', where each element represents the number of chocolates in a packet. Your task is to distribute these chocolates among 'M' stude...read more

Ans.

Distribute chocolates among students to minimize the difference between the largest and smallest number of chocolates.

  • Sort the array of chocolates in ascending order.

  • Iterate through the array and find the minimum difference between the elements by considering 'M' elements at a time.

  • Return the minimum difference found as the result.

Add your answer

Q6. Flip The Bits Problem Statement

Given a binary string S of length N where initially all characters are '1', perform exactly M operations, choosing from four specific operations, and determine how many distinct ...read more

Ans.

Count the number of distinct final strings possible after performing a given number of operations on a binary string.

  • Iterate through all possible combinations of operations to determine the final string after each operation.

  • Use bitwise operations to efficiently flip the bits based on the chosen operation.

  • Keep track of distinct final strings using a set data structure.

  • Return the size of the set as the number of distinct final strings.

Add your answer
Are these interview questions helpful?

Q7. Next Greater Element Problem Statement

Given a list of integers of size N, your task is to determine the Next Greater Element (NGE) for every element. The Next Greater Element for an element X is the first elem...read more

Ans.

Find the Next Greater Element for each element in a list of integers.

  • Iterate through the list of integers from right to left.

  • Use a stack to keep track of elements for which the Next Greater Element is not yet found.

  • Pop elements from the stack until a greater element is found or the stack is empty.

  • Assign the Next Greater Element as the top element of the stack or -1 if the stack is empty.

Add your answer

Q8. Alien Dictionary Problem Statement

You are provided with a sorted dictionary (by lexical order) in an alien language. Your task is to determine the character order of the alien language from this dictionary. Th...read more

Ans.

Given a sorted alien dictionary in an array of strings, determine the character order of the alien language.

  • Iterate through the dictionary to build a graph of character dependencies based on adjacent words.

  • Perform a topological sort on the graph to determine the character order.

  • Return the character array representing the order of characters in the alien language.

Add your answer
Share interview questions and help millions of jobseekers 🌟

Q9. Inplace Rotate Matrix 90 Degrees Anti-Clockwise

You are provided with a square matrix of non-negative integers of size 'N x N'. The task is to rotate this matrix by 90 degrees in an anti-clockwise direction wit...read more

Ans.

Rotate a square matrix by 90 degrees anti-clockwise without using extra space.

  • Iterate through each layer of the matrix from outer to inner layers

  • Swap elements in groups of 4 to rotate them in place

  • Handle odd-sized matrices separately by adjusting the loop boundaries

Add your answer

Q10. Tr2-difference between compiler and interpreter, Solve a challange on their own coding platform with proper output

Ans.

Difference between compiler and interpreter with a coding challenge

  • Compiler translates the entire code into machine language before execution while interpreter translates line by line during execution

  • Compiler generates an executable file while interpreter does not

  • Compiler is faster but debugging is harder while interpreter is slower but debugging is easier

  • Coding challenge: Write a program to find the sum of two numbers and print the result

Add your answer

Q11. Tr1- difference between switch case and if else, write the code for sorting

Ans.

Switch case is used for multiple conditions while if else is for binary conditions. Sorting can be done using various algorithms.

  • Switch case is faster than if else for multiple conditions

  • If else is more readable for binary conditions

  • Sorting can be done using bubble sort, insertion sort, quick sort, etc.

  • Example code for bubble sort: for(i=0;iarr[j+1]){swap(&arr[j],&arr[j+1]);}}}

Add your answer

Q12. What is static keyword

Ans.

The static keyword in programming is used to declare variables, methods, or classes that belong to the class itself rather than instances of the class.

  • Static variables are shared among all instances of a class.

  • Static methods can be called without creating an instance of the class.

  • Static classes cannot be instantiated and are used for grouping related methods and variables.

  • Example: public static int count = 0; // static variable

Add your answer

Q13. Difference between C and Cpp

Ans.

C is a procedural programming language while C++ is an object-oriented programming language.

  • C is a subset of C++.

  • C does not support classes and objects, while C++ does.

  • C++ supports function overloading and operator overloading, which C does not.

  • C++ has a more complex syntax compared to C.

  • C++ has a standard template library (STL) for data structures and algorithms, which C does not have.

Add your answer

Q14. Give Introduction

Ans.

I am a software developer with 5 years of experience in Java and Python.

  • Experienced software developer

  • Proficient in Java and Python

  • 5 years of industry experience

Add your answer
Contribute & help others!
Write a review
Share interview
Contribute salary
Add office photos

Interview Process at Nestwell Technologies

based on 6 interviews
1 Interview rounds
Technical Round
View more
Interview Tips & Stories
Ace your next interview with expert advice and inspiring stories

Top Software Developer Interview Questions from Similar Companies

3.7
 • 115 Interview Questions
3.5
 • 46 Interview Questions
3.9
 • 31 Interview Questions
4.1
 • 25 Interview Questions
3.9
 • 12 Interview Questions
3.4
 • 11 Interview Questions
View all
Share an Interview
Stay ahead in your career. Get AmbitionBox app
qr-code
Helping over 1 Crore job seekers every month in choosing their right fit company
75 Lakh+

Reviews

5 Lakh+

Interviews

4 Crore+

Salaries

1 Cr+

Users/Month

Contribute to help millions

Made with ❤️ in India. Trademarks belong to their respective owners. All rights reserved © 2024 Info Edge (India) Ltd.

Follow us
  • Youtube
  • Instagram
  • LinkedIn
  • Facebook
  • Twitter