Oracle Interview DS questions
Summary
I recently interviewed with Oracle for a software role, and it was a great learning experience where I encountered several coding questions testing my problem-solving skills, data structures, and algorithmic thinking.
Full Experience
I recently had the opportunity to interview with Oracle for a software role, and it was a great learning experience! Here are some of the coding questions I encountered during the process:
1️⃣ Remove the minimum number of parentheses for a valid string
Given a string containing parentheses, the goal is to remove the minimum number of invalid parentheses to make the string valid. Hint:-The solution requires efficient use of stacks or DFS.
2️⃣ Stock Price Tracker
You are given a stream of records about a particular stock. Each record contains a timestamp and the corresponding price of the stock at that timestamp. You need to implement the Stock Price class that supports the following operations:
Update the price of the stock at a given timestamp.
Retrieve the latest stock price (price at the latest timestamp recorded).
Retrieve the maximum stock price recorded so far.
Retrieve the minimum stock price recorded so far.
Hint:-This problem can be efficiently solved using a combination of hash maps and priority queues.
3️⃣ Maximum Path Sum in a Binary Tree
Given a binary tree, find the path with the maximum sum. The path can start and end at any node.
Hint:- The solution involves a depth-first search (DFS) traversal while keeping track of the maximum sum encountered.
These questions tested my problem-solving skills, data structures, and algorithmic thinking. Overall, it was a great experience!
If you’re preparing for coding interviews, I highly recommend practicing these types of questions. Feel free to drop a comment if you have any thoughts or if you’ve faced similar challenges in your interviews!
#Oracle #InterviewExperience #CodingInterview #DataStructures #Algorithms #SoftwareEngineering
Interview Questions (3)
Given a string containing parentheses, the goal is to remove the minimum number of invalid parentheses to make the string valid. Hint:-The solution requires efficient use of stacks or DFS.
You are given a stream of records about a particular stock. Each record contains a timestamp and the corresponding price of the stock at that timestamp. You need to implement the Stock Price class that supports the following operations:
Update the price of the stock at a given timestamp.
Retrieve the latest stock price (price at the latest timestamp recorded).
Retrieve the maximum stock price recorded so far.
Retrieve the minimum stock price recorded so far.
Hint:-This problem can be efficiently solved using a combination of hash maps and priority queues.
Given a binary tree, find the path with the maximum sum. The path can start and end at any node. Hint:- The solution involves a depth-first search (DFS) traversal while keeping track of the maximum sum encountered.