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Dell SDE Interview Questions and Answers

Updated 31 Mar 2024

Dell SDE Interview Experiences

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SDE Interview Questions & Answers

user image Anonymous

posted on 8 Aug 2022

I applied via Campus Placement and was interviewed in Jul 2022. There were 2 interview rounds.

Round 1 - Aptitude Test 

Cs subjects regarding OS, C, DBMS

Round 2 - Technical 

(2 Questions)

  • Q1. Implement insertion sort
  • Ans. 

    Insertion sort is a simple sorting algorithm that builds the final sorted array one item at a time.

    • Start with the second element and compare it with the first element, swap if necessary

    • Move to the third element and compare it with the second and first element, swap if necessary

    • Continue this process until the entire array is sorted

    • Time complexity: O(n^2)

    • Example: ['banana', 'apple', 'orange', 'grape'] -> ['apple', 'banan

  • Answered by AI
  • Q2. Implement tree and code
  • Ans. 

    Implementing a tree data structure using code

    • Define a Node class with left and right child pointers

    • Implement insert, search, and delete functions

    • Traversal methods: inorder, preorder, postorder

    • Examples: binary search tree, AVL tree, red-black tree

  • Answered by AI

Interview Preparation Tips

Topics to prepare for Dell SDE interview:
  • DBMS
  • C
  • CPP
  • OS
Interview preparation tips for other job seekers - keep strong DS keep stromg DBMS practice Coding prepare Aptitude

Skills evaluated in this interview

SDE Interview Questions & Answers

user image Anonymous

posted on 31 Mar 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Referral and was interviewed before Mar 2023. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. 2 string based coding questions RXJS and js based input output questions

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SDE Interview Questions & Answers

user image Anonymous

posted on 21 May 2022

I was interviewed before May 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

  • Q1. What are functional relations in the context of database management systems (DBMS)?
  • Ans. 

    Functional relations in DBMS define a relationship between input and output values where each input has a unique output.

    • Functional relations ensure that each input value maps to only one output value.

    • They are commonly used in database design to enforce data integrity and consistency.

    • For example, in a table storing employee information, the employee ID can be a functional key that uniquely identifies each employee.

  • Answered by AI
Round 2 - Video Call 

(1 Question)

Round duration - 40 minutes
Round difficulty - Hard

  • Q1. Puzzle

    Questions related to Web development and machine learning

  • Ans. 

    The question is related to Web development and machine learning.

    • Web development involves creating websites and web applications using languages like HTML, CSS, and JavaScript.

    • Machine learning is a subset of artificial intelligence that involves building models to make predictions based on data.

    • Examples of web development frameworks include React, Angular, and Vue.js.

    • Examples of machine learning algorithms include linea...

  • Answered by AI
Round 3 - HR 

Round duration - 20 minutes
Round difficulty - Medium

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from Manipal University Jaipur. I applied for the job as SDE in HyderabadEligibility criteria8+ GPADell Technologies interview preparation:Topics to prepare for the interview - RDBMS, OS, DSA, Software Engineering, Web development.Time required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Have clear understanding of fundamental concepts.
Tip 2 : Have a skill of explaining your thoughts as clearly as possible.
Tip 3 : Practice RDBMS and OS concepts.

Application resume tips for other job seekers

Tip 1 : Mention about the projects you've done with detail
Tip 2 : Have deep knowledge about everything mentioned on your resume.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview questions from similar companies

Interview Questionnaire 

6 Questions

  • Q1. Find a equilibrium index in array
  • Ans. 

    Find an index in array where sum of elements on left side is equal to sum of elements on right side.

    • Loop through array and calculate sum of all elements

    • Then loop through array again and check if sum of elements on left side is equal to sum of elements on right side

    • Return the index if found, else return -1

  • Answered by AI
  • Q2. Find the minimum no of jumps required to reach the end of array.where element at each index represent how many max moves you will take in right
  • Ans. 

    Find minimum number of jumps required to reach end of array with max moves in right direction at each index.

    • Use dynamic programming approach to solve the problem

    • Maintain an array to store minimum number of jumps required to reach each index

    • Traverse the array and update the minimum number of jumps for each index

    • Return the minimum number of jumps required to reach the end of array

  • Answered by AI
  • Q3. Tournament tree puzzle and write code for that
  • Ans. 

    Tournament tree is a binary tree where each node represents a match between two players/teams.

    • Tournament tree is used in sports tournaments to determine the winner.

    • The leaf nodes represent the players/teams and the internal nodes represent the matches.

    • The winner of each match is the node with the higher score.

    • Code can be written using a recursive function to traverse the tree and determine the winner.

  • Answered by AI
  • Q4. Find the 2 maximum elements in array in O(n+log(n)) comparison
  • Ans. 

    Find 2 maximum elements in array in O(n+log(n)) comparison

    • Use divide and conquer approach

    • Divide array into two halves

    • Recursively find max elements in each half

    • Compare the two max elements to find the overall max elements

  • Answered by AI
  • Q5. Celebrity Problem puzzle and write code for that
  • Q6. Given a 2D array of 0 and 1. where each row is sorted. find the row with maximum no of 1 in minimum time complexcity
  • Ans. 

    Find row with maximum 1s in a sorted 2D array of 0s and 1s.

    • Use binary search to find the first occurrence of 1 in each row.

    • Calculate the number of 1s in each row using the index found in step 1.

    • Keep track of the row with maximum number of 1s.

    • Time complexity: O(m log n), where m is the number of rows and n is the number of columns.

  • Answered by AI

Interview Preparation Tips

College Name: IIT GANDHINAGAR

Skills evaluated in this interview

Interview Questionnaire 

8 Questions

  • Q1. Given an array A[n] such that A[i+1] = A[i]+1 OR A[i]-1, and a number k, find out whether k is present in A[n] or not, in most efficient way?
  • Ans. 

    Efficiently check if a number is present in an array where each element differs by 1.

    • Use binary search to find the element in the array

    • Calculate the difference between the middle element and the first element

    • If the difference is equal to the index of the middle element minus the index of the first element, then the left half of the array is consecutive

    • If the difference is not equal, then the right half of the array is ...

  • Answered by AI
  • Q2. Name any 1 microsoft product that you have been using and suggest 5 improvements in it alongwith priority assignments p1....p5
  • Ans. 

    Microsoft Excel

    • Add more chart types (p1)

    • Improve collaboration features (p2)

    • Enhance data analysis tools (p3)

    • Integrate with more external data sources (p4)

    • Improve error handling and debugging (p5)

  • Answered by AI
  • Q3. A square picture is cut into 16 squares and they are shuffled. Write a program to rearrange the 16 squares to get the original big square
  • Ans. 

    Program to rearrange shuffled 16 squares to get original big square

    • Create a 4x4 matrix to represent the big square and fill it with shuffled squares

    • Loop through the matrix and check if each square is in the correct position

    • If a square is not in the correct position, swap it with the square in the correct position

    • Repeat until all squares are in the correct position

  • Answered by AI
  • Q4. There are 9 identical Marbels out of which 1 is heavy. find out that Marbel
  • Q5. Given 3 sorted arrays, array a, b, c. find all pairs where a[i] + b[j] = c[k] note : a, b , c are sorted arrays
  • Q6. What is the difference between the two declarations? int p=*(int*)i; int p=*(int*)&i;
  • Ans. 

    The first declaration casts i to int pointer and dereferences it, while the second declaration casts the address of i to int pointer and dereferences it.

    • The first declaration assumes i is already an int pointer.

    • The second declaration takes the address of i and casts it to an int pointer.

    • The first declaration may cause a segmentation fault if i is not an int pointer.

    • The second declaration may cause unexpected behavior i...

  • Answered by AI
  • Q7. Given an unsorted array of size 5. How many minimum comparisons are needed to find the median? then he extended it for size n
  • Ans. 

    Minimum comparisons needed to find median in unsorted array of size n

    • For odd n, median is the middle element. For even n, median is the average of middle two elements

    • Minimum comparisons needed for odd n is (n-1)/2. For even n, it is n/2

    • Various sorting algorithms can be used to find median in an unsorted array

  • Answered by AI
  • Q8. Given an array which is alternatively sorted. What will be the time complexity to find out an element in it. e.g. 14,3,16,6,22,7,24,11,27
  • Ans. 

    Time complexity to find an element in an alternatively sorted array.

    • The time complexity will be O(log n) using binary search.

    • Check the middle element and compare with the target element.

    • If the middle element is greater than the target, search in the left half of the array.

    • If the middle element is smaller than the target, search in the right half of the array.

    • Repeat until the target element is found or the array is exha

  • Answered by AI

Interview Preparation Tips

Round: Technical Interview
Experience: #Given an array A[n] such that A[i+1] = A[i]+1 OR A[i]-1, and a number k, find out whether k is present in A[n] or not, in most efficient way?
#Name any 1 microsoft product that you have been using and suggest 5 improvements in it alongwith priority assignments p1....p5.
#A square picture is cut into 16 squares and they are shuffled. Write a program to rearrange the 16 squares to get the original big square.
#There are 9 identical Marbels out of which 1 is heavy. find out that Marbel.
#given 3 sorted arrays, array a, b, c.
find all pairs where a[i] + b[j] = c[k]
note : a, b , c are sorted arrays.
#What is the difference between the two declarations?
int p=*(int*)i;
int p=*(int*)&i;
#Given an unsorted array of size 5.
How many minimum comparisons are needed to find the median? then he extended it for size n.
#Given an array which is alternatively sorted. What will be the time complexity to find out an element in it.
e.g. 14,3,16,6,22,7,24,11,27

College Name: NA

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Oct 2024. There were 2 interview rounds.

Round 1 - Coding Test 

Abcdef jssu ksye ksyd kahe jeheb

Round 2 - Technical 

(2 Questions)

  • Q1. Introduce yourself
  • Q2. Project related questions
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Traverse Binary Tree
  • Ans. 

    Traverse a binary tree in different orders (inorder, preorder, postorder)

    • Inorder traversal: Left, Root, Right

    • Preorder traversal: Root, Left, Right

    • Postorder traversal: Left, Right, Root

  • Answered by AI
  • Q2. How does bittorent work
  • Ans. 

    BitTorrent is a peer-to-peer file sharing protocol that allows users to distribute large amounts of data over the internet.

    • BitTorrent breaks down files into small pieces and distributes them among multiple users.

    • Users download and upload pieces of the file simultaneously, increasing download speeds.

    • Users connect to a tracker to find other users sharing the same file.

    • Popular BitTorrent clients include uTorrent, BitTorre

  • Answered by AI
Interview experience
4
Good
Difficulty level
-
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Jan 2024. There was 1 interview round.

Round 1 - Coding Test 

3 coding questions, mostly focused on dp, graphs strings and arrays, it was medium to hard level

Interview experience
3
Average
Difficulty level
Hard
Process Duration
4-6 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Mar 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all Resume tips
Round 2 - HR 

(1 Question)

  • Q1. Tell me about yourself
Round 3 - Technical 

(1 Question)

  • Q1. Reverse a tree using DSA
  • Ans. 

    Reverse a tree using DSA involves traversing the tree in a specific order and swapping the left and right child nodes.

    • Start by traversing the tree in post-order or level-order traversal.

    • Swap the left and right child nodes of each node as you traverse the tree.

    • Continue until all nodes have been visited and their children swapped.

  • Answered by AI

Skills evaluated in this interview

SDE Interview Questions & Answers

IBM user image Anonymous

posted on 22 Feb 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Quantitative and Verbal

Round 2 - Coding Test 

2 Questions - DSA (Array and Numbers)

Round 3 - One-on-one 

(1 Question)

  • Q1. Projects mentioned in the resume and technical skills
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Dell Interview FAQs

How many rounds are there in Dell SDE interview?
Dell interview process usually has 1-2 rounds. The most common rounds in the Dell interview process are Technical and Aptitude Test.
What are the top questions asked in Dell SDE interview?

Some of the top questions asked at the Dell SDE interview -

  1. implement insertion s...read more
  2. implement tree and c...read more
  3. 2 string based coding questions RXJS and js based input output questi...read more

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Dell SDE Interview Process

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