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ServiceNow SDE Interview Questions and Answers

Updated 21 Mar 2024

ServiceNow SDE Interview Experiences

1 interview found

SDE Interview Questions & Answers

user image Anonymous

posted on 21 Mar 2024

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

Online coding test with 2 coding questions

Round 2 - Technical 

(1 Question)

  • Q1. What is storage differnece for files in ram
  • Ans. 

    Files in RAM are stored temporarily for quick access by the CPU.

    • RAM (Random Access Memory) is volatile memory used for temporary storage of data and instructions.

    • Files stored in RAM are accessed much faster than files stored on a hard drive.

    • RAM is cleared when the computer is turned off, so files stored in RAM are not persistent.

    • Examples of files stored in RAM include open applications, running processes, and cached da

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

SDE Interview Questions & Answers

Adobe user image Anonymous

posted on 5 Jun 2015

Interview Questionnaire 

18 Questions

  • Q1. Detail questions on copy constructors were asked
  • Q2. Deep copy, shallow copy (need for explicitly writing copy constructor)
  • Q3. Operating system concepts such as memory Management and semaphores, critical section
  • Q4. Overloading, Overriding(Function and operator both)
  • Q5. Virtual Functions
  • Q6. Resume based interview
  • Q7. Some more discussions on virtual classes and functions, overloading, overriding, copy constructors
  • Q8. Puzzles such as no of 0s in 100!, and water- jug problem
  • Q9. Merge two double linked list. What will be the difference if they are singly linked list
  • Ans. 

    To merge two double linked lists, traverse to the end of the first list and connect it to the head of the second list.

    • Traverse to the end of the first list

    • Connect the last node of the first list to the head of the second list

    • If the lists are singly linked, we need to traverse to the end of the first list and connect it to the head of the second list. But we also need to keep track of the last node of the first list to ...

  • Answered by AI
  • Q10. Make a data structure such that it can store an image dynamically
  • Ans. 

    A dynamic data structure for storing images as arrays of strings.

    • Use a 2D array of strings to represent the image pixels.

    • Implement resizing methods to adjust the size of the image.

    • Include methods for adding, removing, and modifying pixels.

    • Consider using compression techniques to reduce memory usage.

    • Support various image formats such as JPEG, PNG, and BMP.

  • Answered by AI
  • Q11. Copy fixed no of bytes from source to destination and its test cases( ex: copy(source, destination,bytes) so now command copy(a,a+3,8) will not give correct results in some cases and copy(a,a-4,8) will n...
  • Ans. 

    Copying fixed number of bytes from source to destination and its test cases.

    • Ensure source and destination are not overlapping

    • Check if the number of bytes to be copied is greater than the available space in the destination

    • Handle cases where source or destination is NULL

    • Test cases should cover all possible scenarios including edge cases

  • Answered by AI
  • Q12. Some puzzles like weighing problem..N Balls given all of same weight except one..What is the max value of N so that u can figure out the ball with less weight in 2 rounds or 3 rounds
  • Q13. Some HR questions about family and yourself
  • Q14. Detail discussion on virtual functions
  • Q15. Optimized fibonacci program
  • Ans. 

    An optimized Fibonacci program computes Fibonacci numbers efficiently.

    • Use memoization to store previously computed values.

    • Use iterative approach instead of recursive approach.

    • Use bitwise operators to perform arithmetic operations faster.

    • Use matrix exponentiation to compute Fibonacci numbers in logarithmic time.

  • Answered by AI
  • Q16. Solution for solving problems generated by virtual functions
  • Ans. 

    Virtual functions can cause problems due to their dynamic nature, but can be solved using various techniques.

    • Use pure virtual functions to ensure all derived classes implement the function

    • Use interface classes to define a common interface for all derived classes

    • Use smart pointers to manage memory and avoid memory leaks

    • Use virtual destructors to ensure proper destruction of objects

    • Avoid excessive use of virtual function

  • Answered by AI
  • Q17. Some good questions on compile time error check, link time error check and run time error check
  • Q18. One Image puzzle

Interview Preparation Tips

College Name: NA

Skills evaluated in this interview

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

SDE Interview Questions & Answers

Adobe user image Anonymous

posted on 5 Oct 2023

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

DSA,COMPUTER FUNDAMENTALS

Round 3 - One-on-one 

(1 Question)

  • Q1. TELL ABOUT TREE TRAVERSALS
  • Ans. 

    Tree traversals are methods used to visit each node in a tree data structure in a specific order.

    • Inorder traversal: Visit left subtree, then root, then right subtree

    • Preorder traversal: Visit root, then left subtree, then right subtree

    • Postorder traversal: Visit left subtree, then right subtree, then root

  • Answered by AI

Skills evaluated in this interview

SDE Interview Questions & Answers

Oracle user image kilari harshavardhan

posted on 13 Oct 2023

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Assignment 

Basic dp and graph questions

Round 2 - Technical 

(2 Questions)

  • Q1. Left leaf nodes sum in a binary tree
  • Ans. 

    Calculate the sum of all left leaf nodes in a binary tree.

    • Traverse the binary tree using depth-first search (DFS)

    • Check if a node is a leaf node and if it is a left child

    • Add the value of the left leaf node to the sum

    • Recursively traverse the left and right subtrees

  • Answered by AI
  • Q2. About my past projects
Round 3 - HR 

(1 Question)

  • Q1. Discussion about myself and my projects

Interview Preparation Tips

Interview preparation tips for other job seekers - keep grinding on dsa and dbms to crack it.

Skills evaluated in this interview

SDE Interview Questions & Answers

Oracle user image Anonymous

posted on 5 Mar 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Feb 2024. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Leetcode- Climb stairs (medium)
  • Q2. Reverse linkedlist
Round 2 - Technical 

(1 Question)

  • Q1. Leetcode- Rotten oranges matrix

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

SDE Interview Questions & Answers

HCLTech user image Anonymous

posted on 16 Aug 2021

Interview Questionnaire 

1 Question

  • Q1. Introduction And Overview of Company
  • Ans. First introduced yourself with a little smile and before any interview go through the JD of the company, this will help you more. And one more thing that search about the interviewers who is going to take your interview.
  • Answered Anonymously
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
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ServiceNow Interview FAQs

How many rounds are there in ServiceNow SDE interview?
ServiceNow interview process usually has 2 rounds. The most common rounds in the ServiceNow interview process are Coding Test and Technical.

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