Aeidan Industries Interview Questions and Answers

Turn on one switch for a few minutes, turn it off, then turn on another switch. Enter the room and touch the bulbs to determine which is warm and which is cold.

• Turn on switch 1 and leave it on for a few minutes

• Turn off switch 1 and turn on switch 2

• Enter the room and touch the bulbs

• The bulb that is warm is connected to switch 1, the bulb that is cold is connected to switch 2

Rotate a linked list twice to the right.

• Traverse the linked list to find the length and the last node.

• Connect the last node to the head to form a circular linked list.

• Traverse the linked list again to find the new last node and break the circular link.

• Connect the new last node to the head to complete the rotation.

Hashmap is a data structure that stores key-value pairs and provides constant time complexity for insertion, deletion and retrieval.

• Hashmap uses hashing function to map keys to their corresponding values in an array

• Collisions can occur when two keys map to the same index, which can be resolved using techniques like chaining or open addressing

• Hashmap has O(1) time complexity for insertion, deletion and retrieval operations

• Java example: HashMap map = new HashMap<>(); map.put("k...read more

Understanding a coding question involves analyzing the problem, identifying the requirements, and devising a solution using programming concepts.

• Read the problem statement carefully to understand the input, output, and constraints.

• Identify the key requirements and constraints of the problem.

• Break down the problem into smaller subproblems if necessary.

• Choose appropriate data structures and algorithms to solve the problem efficiently.

• Write clean and readable code to implement t...read more

Reverse a linked list

• Iterate through the linked list and change the direction of the pointers

• Use three pointers to keep track of the current, previous and next nodes

• Handle the edge cases of empty list and single node list

Questions on parallel foreach loop, dynamic queries, IQueryable vs IEnumerable, and session management.

• Parallel foreach loop allows for concurrent execution of a loop.

• Dynamic queries allow for building queries at runtime.

• IQueryable allows for deferred execution of queries and optimization.

• IEnumerable is a simpler interface for iterating over collections.

• Session management involves tracking user sessions and storing session data.

• Example of fetching top 10 employees using lambd...read more