Oracle Application Developer Interview Questions, Process, and Tips

Dsa and oop, cn, be confident

Q1. Sum 2 linkedlists in efficient way
Ans. 
Use iterative approach to traverse both linked lists and sum corresponding nodes while keeping track of carry.
• Iterate through both linked lists simultaneously

• Sum corresponding nodes and carry from previous sum

• Create a new linked list to store the sum
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Q1. Basic Hr Questions
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Q1. Question 1:- Two Sum Question 2:- Three Sum Question 3:- Anagram in String
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Q1. Largest element in window size K
Ans. 
Find the largest element in a window of size K in an array.
• Iterate through the array and maintain a deque to store the indices of elements in decreasing order.

• Remove indices from the front of the deque that are outside the current window.

• The front of the deque will always have the index of the largest element in the current window.
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Q2. Design Tic Tac Toe
Ans. 
Design a Tic Tac Toe game
• Create a 3x3 grid to represent the game board

• Allow two players to take turns marking X and O on the grid

• Check for win conditions after each move to determine the winner

• Handle tie game if all spaces are filled without a winner
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Q3. Sql query using joins
Ans. 
SQL query using joins
• Use JOIN keyword to combine rows from two or more tables based on a related column between them

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q1. Design circular doubly linked list with all operations.
Ans. 
Circular doubly linked list is a data structure where each node has a reference to both the next and previous nodes, forming a circular loop.
• Create a Node class with data, next, and prev pointers

• Implement operations like insert, delete, search, and display

• Ensure the last node's next pointer points to the first node and the first node's prev pointer points to the last node
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Q2. Discussion on past projects, toughest problem solved till now.
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Q3. Different types of searching and sorting algo discussion.
Ans. 
Searching and sorting algorithms are essential in programming for efficiently organizing and retrieving data.
• Searching algorithms: linear search, binary search, depth-first search, breadth-first search

• Sorting algorithms: bubble sort, selection sort, insertion sort, merge sort, quick sort

• Examples: Searching for a specific item in a list, sorting a list of numbers in ascending order
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1 coding question on binary search
1 rest API question
15 English And Aptitude mcq

Q1. Project, trie, lru cache
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Q1. System design question
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Q1. Projects, Reactjs, infix to postfix code
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Q1. General questions related to Oracle PLSQL
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MCQ rounds based on Java, OOPS, SQL,DBMS, etc

Q1. DSA Questions and Questions based on project.
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Q1. Easy dsa question
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Q2. Core java question
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