Infineon Technologies Interview Questions and Answers

The question asks to link up all nodes present in the same level of a binary search tree using the next pointer.

• Traverse the tree level by level using a queue

• For each level, create a linked list by connecting the nodes using the next pointer

• Use a dummy node to keep track of the start of the linked list for each level

The question asks for the length of the longest absolute directory path string and how to optimize it.

• Use a depth-first search (DFS) algorithm to traverse the directory structure

• Maintain a stack to keep track of the current path length

• Keep updating the maximum path length encountered

• Consider the length of each directory/file name and the length of the path separators

Design a system to find the millionth person liking a particular comment.

• Use a database to store the likes for each comment

• Implement a counter to keep track of the number of likes for each comment

• Use a caching mechanism to improve performance

• Consider sharding or partitioning the data for scalability

• Implement a search algorithm to find the millionth person

Design a thread-safe implementation of HashMap.

• Use synchronized methods or locks to ensure mutual exclusion.

• Consider using ConcurrentHashMap instead of HashMap.

• Use volatile keyword for variables accessed by multiple threads.

• Avoid using iterators as they may cause ConcurrentModificationException.

• Use atomic operations for read-modify-write operations.

• Consider using immutable keys to avoid synchronization issues.

Debugging a code of Dining Philosopher Problem

• Check for deadlock conditions

• Ensure that each philosopher can only pick up two forks at a time

• Implement a solution using semaphores or monitors

• Consider using a timeout mechanism to prevent deadlock

• Test the code with different scenarios to identify and fix any issues

When you search Google, it retrieves relevant information from its index and displays results based on the search query.

• Google retrieves information from its index of web pages

• Results are displayed based on relevance to the search query

• Search results may include websites, images, videos, news articles, and more