Oracle Interview Questions, Process, and Tips

Q1. What are the key components and considerations for low-level design in a healthcare system?
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Q1. No of days workers do like A works 10 days B works 10 days
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Q2. Graph based question
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Q1. Merge two sorted arrays
Ans. 
Merge two sorted arrays into a single sorted array
• Create a new array to store the merged result

• Use two pointers to iterate through both arrays and compare elements

• Add the smaller element to the new array and move the pointer for that array
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Q2. Max heap based question
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Q1. Maximum length of subarray of given sum
Ans. 
Find the maximum length of a subarray with a given sum in an array.
• Use a hashmap to store the running sum and its corresponding index.

• Iterate through the array and update the hashmap with the running sum.

• Check if the difference between the current sum and the target sum exists in the hashmap to find the subarray length.
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Q2. Oops implementation question not theory question
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Q1. Reverse String without Java In built Function
Ans. 
Reverse a string without using Java built-in functions
• Create a character array from the input string

• Use two pointers to swap characters at the beginning and end of the array until they meet

• Convert the character array back to a string
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Q2. Difference Between Relative Xpath & Absolute Xpath
Ans. 
Relative Xpath is based on the current node while Absolute Xpath starts from the root node of the XML document.
• Relative Xpath does not start with a forward slash (/) while Absolute Xpath starts with a forward slash (/).

• Relative Xpath is more flexible and less prone to changes in the structure of the XML document.

• Absolute Xpath is more specific and provides the full path to the element in the XML document.

• Relative Xpath...read more
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Live coding + system Design interview for 5 rounds

Q1. Manger - System design
Ans. 
System design is the process of defining the architecture, components, modules, interfaces, and data for a system to satisfy specified requirements.
• Understand the requirements and constraints of the system

• Identify the key components and their interactions

• Consider scalability, reliability, and performance

• Design for flexibility and maintainability

• Use appropriate design patterns and technologies
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Q2. Coding skills on java
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Q1. Principal Engineer interview
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Q2. Binary search problem on matrix
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