Java Coding

Problem: Given a Roman numeral, convert it to an Integer.

Problem: Given an Integer input, convert it to a Roman numeral. Input is within the range from 1 to 3999.

Implementation of Kafka Consumer using Java

Implementation of Kafka Producer using Java

Implementation of Elevator or Lift has been asked in many interviews. I have tried to implement it using muti-threading and TreeSet. TreeSet is used to store incoming request. It is a good choice here as it removes the duplicate requests and implements NavigableSet which provide you methods such as floor and ceiling.

Elevator in this program implements following features -

• If elevator is going up or down, it checks for nearest floor request to process first in that direction.
• If there is no request to process, it waits at last processed floor.
• If a new request comes while elevator is processing a request. It process the new request first if it is nearest than the processing floor in same direction.