Royal Bank of Scotland Interview Experience | Set 2 (Software Designer)

Round 1: This was a written pen and paper round with 20 MCQ questions (related to Java as I applied for Java developer) and 4 coding questions out of which three needed to be done on paper

Coding Ques:

Find the row with highest no. of 1 in a 2d sorted matrix having 0 and 1 as column values

Reverse a linked list recursively

Rwo roads and only one sided traffic at a time is allowed. Code for synchronization to avoid deadlock

Counting semaphore problem in which a resource as N instances.Synchorinizing access to resource .

MCQ questions related to Strings initialization ,Java 8 features ,JIT,mutex,Singleton pattern ,Streams etc Some times more than one is correct.

Round 2: This was a technical discussion of Round one

Asked to explain the Programmes written .

Role in previous company .

Architecture and understanding of the projects done in previous company .

Design patterns familiar with and used and asked about Singleton

Round 3: Was a Design round of one hour on pen and paper Both HIGH and LOW level design was asked .

Design a system which could have N clients .Each client can be charged with M prices depending upon P number of services.

System should have following characteristics

N can always be increased or decreased

M can always be increased or decreased like (hotel prices) so a variable pricing scheme need to be implemented

Services can also increase or decrease

System could Serve millions of customer at a time

System should be scalable and fault tolerant.

The requested should be served as fast as possible minimizing space.

Round 4 : technical discussion of design Round

Cache implementation .

Hashmap implementation .

Data structure implementation which could store only duplicates

Implementing a service in which a task  is done by 10 threads parallely and we have to update task progress of each thread in overall progress like a file download manager


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