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Oracle
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I applied via LinkedIn and was interviewed in Sep 2022. There were 2 interview rounds.
To handle support for Opera cloud ITIL, follow ITIL best practices and prioritize incidents based on impact and urgency.
Follow ITIL best practices for incident management
Prioritize incidents based on impact and urgency
Ensure timely resolution and communication with stakeholders
Maintain documentation and knowledge base for future reference
Continuously improve support processes through feedback and analysis
The server in hotels was working efficiently and reliably.
The server was able to handle high traffic and data volume without any major issues.
Regular maintenance and updates were performed to ensure optimal performance.
The server was also equipped with backup and disaster recovery systems to prevent any data loss or downtime.
Examples of applications running on the server include reservation systems, billing systems, an...
I applied via Company Website and was interviewed before Oct 2019. There were 4 interview rounds.
posted on 16 Sep 2021
I appeared for an interview before Sep 2020.
Round duration - 50 minutes
Round difficulty - Easy
This was a Data Structural round.
Given a two-dimensional array/list consisting of integers 0s and 1s, where 1 represents land and 0 represents water, determine the number of distinct islands. A group of...
Count the number of distinct islands in a 2D array of 0s and 1s.
Identify islands by performing depth-first search (DFS) on the grid
Use a set to store the shape of each island and check for duplicates
Consider translations to determine distinct islands
Round duration - 50 minutes
Round difficulty - Easy
This was a Data Structural round.
You are tasked with arranging 'N' words of varying lengths such that each line contains at most 'M' characters, with each word separated by a space. The challenge is to minimiz...
The goal is to minimize the total cost of arranging 'N' words on each line with a maximum character limit 'M'.
Calculate the cost of each line as the cube of extra space characters needed to reach 'M'.
Minimize the total cost by arranging words to fit within the character limit on each line.
Ensure each word appears fully on one line without breaking across lines.
Round duration - 60 minutes
Round difficulty - Easy
This was a System Design round.
Design a system similar to Red Bus for handling bookings and onboarding vendors and customers.
Implement a user-friendly interface for customers to search and book tickets
Create a vendor portal for vendors to manage their offerings and availability
Include payment gateway integration for secure transactions
Develop a robust backend system for managing bookings, cancellations, and refunds
Utilize a database to store user in...
Round duration - 50 minutes
Round difficulty - Easy
This was a System Design round
Round duration - 50 minutes
Round difficulty - Easy
This was an HR round.
Tip 1 : Practice as much as you can.
Tip 2 : Prepare for company, not in general.
Tip 3 : Your past work should be objective and your contribution should be very clear
Tip 1 : Keep only relevant things for the job you are applying.
Tip 2 : Minimal data with measurable contribution and effect.
A generic swap function swaps two values of any data type.
The function should take two parameters of any data type.
Use a temporary variable to store the value of one parameter.
Assign the value of the second parameter to the first parameter.
Assign the value of the temporary variable to the second parameter.
Search for an element in a rotated sorted linked list.
Find the pivot point where the list is rotated.
Divide the list into two sublists based on the pivot point.
Perform binary search on the appropriate sublist.
Handle edge cases such as empty list and list with only one element.
Search an element in a rotated sorted array
Find the pivot point where the array is rotated
Divide the array into two sub-arrays based on pivot point
Perform binary search on the appropriate sub-array
Repeat until element is found or sub-array size is 1
Given a Sudoku board, find possible numbers for an empty cell.
Iterate through empty cells and check possible numbers using row, column, and box constraints.
Use a set to keep track of possible numbers for each empty cell.
Return the set of possible numbers for the given empty cell.
Find integer average of 4 unsigned integers without typecasting
Add all the integers and divide by 4
Use bit shifting to divide by 4
Handle overflow by using long long data type
Use unsigned int data type for input
Code to identify 32 bit or 64 bit architecture of a processor
Check if the operating system is 32 bit or 64 bit
If OS is 32 bit, processor is 32 bit
If OS is 64 bit, check if processor supports 64 bit architecture
Use CPUID instruction to check if processor supports 64 bit architecture
Convert binary number to base 64 integer
Divide the binary number into groups of 6 bits
Convert each group of 6 bits to decimal
Map the decimal value to the corresponding base 64 character
Concatenate the base 64 characters to form the final integer
What people are saying about Oracle
Creating test cases for random scenarios ensures software reliability and robustness through diverse input validation.
Identify edge cases: Test with minimum and maximum input values, e.g., an empty array vs. a large array.
Use random data: Generate random inputs to simulate real-world usage, e.g., random user names or passwords.
Test invalid inputs: Ensure the system handles unexpected inputs gracefully, e.g., negative n...
I appeared for an interview before Mar 2021.
Round duration - 45 minutes
Round difficulty - Medium
Technical Interview round with questions on DSA.
You are given a string of length N
. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...
You are given a stack of integers. Your task is to reverse the stack using recursion without using any extra space other than the internal stack space used due to recursion...
Reverse a stack using recursion without using any extra space other than the internal stack space.
Use recursion to pop all elements from the original stack and store them in function call stack.
Once the stack is empty, push the elements back in reverse order.
Base case of recursion should be when the original stack is empty.
Round duration - 45 minutes
Round difficulty - Medium
Technical Interview round with questions on DSA.
Given a binary tree, convert this binary tree into its mirror tree. A binary tree is a tree in which each parent node has at most two children. The mirror of a bin...
Convert a binary tree to its mirror tree by interchanging left and right children of all non-leaf nodes.
Traverse the binary tree in a recursive manner.
Swap the left and right children of each non-leaf node.
Continue this process until all nodes have been processed.
You are given a singly linked list with 'N' nodes, each containing integer data, and an integer 'K'. Your goal is to remove the 'K'th node counting from the end of ...
Remove the Kth node from the end of a singly linked list.
Use two pointers approach to find the Kth node from the end.
Handle edge cases like removing the head node or removing the last node.
Update the pointers to remove the Kth node and reconnect the list.
Round duration - 30 minutes
Round difficulty - Easy
Typical Managerial round.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I appeared for an interview in Oct 2016.
Regular expressions in PHP are powerful tools for pattern matching and manipulating strings.
Regular expressions are defined using the preg_match() function in PHP.
They are used to search, replace, and validate strings based on specific patterns.
Regex patterns consist of a combination of characters and special symbols.
Modifiers can be added to the pattern to control the matching behavior.
Common regex functions in PHP in...
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.
Polymorphism allows a single interface to be used for different types of objects.
It enables code reusability and flexibility in object-oriented programming.
For example, a parent class 'Animal' can have multiple child classes like 'Dog', 'Cat', and 'Bird'. They can all be treated as 'Anim...
I appeared for an interview in Dec 2016.
A DBMS for managing college faculty, professors, courses, and students.
The DBMS should have tables for faculty, professors, courses, and students.
Each table should have appropriate attributes to store relevant information.
Relationships can be established between tables using foreign keys.
Queries can be used to retrieve information about faculty, professors, courses, and students.
The DBMS can be used to track enrollment...
Yes, I believe in seeking help when stuck in a problem as it leads to faster resolution and learning.
I believe in collaborating with team members to brainstorm solutions
I am not afraid to ask for help from more experienced developers
I utilize online resources like Stack Overflow or documentation when needed
Teamwork is collaborating with others towards a common goal, utilizing each member's strengths and skills.
Collaborating with others towards a common goal
Utilizing each member's strengths and skills
Communicating effectively and openly
Respecting and valuing diverse perspectives
Sharing responsibilities and supporting each other
Celebrating successes as a team
When faced with an unsolvable problem, I break it down, research, seek help, experiment, and iterate until a solution is found.
Break down the problem into smaller, manageable parts
Research and gather information related to the problem
Seek help from colleagues, online communities, or experts
Experiment with different approaches or solutions
Iterate and refine the solution based on feedback and results
based on 1 interview experience
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