Recruit CRM Product Manager Trainee Interview Questions and Answers

Q1. Merge Intervals problem
Ans. 
Given a list of intervals, merge overlapping intervals.
• Sort the intervals based on their start times.

• Iterate through the intervals and merge overlapping intervals.

• Return the merged intervals.

• Example: [[1,3],[2,6],[8,10],[15,18]] -> [[1,6],[8,10],[15,18]]
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Q2. Design hotel management
Ans. 
Design a hotel management system
• Create a database to store information about rooms, guests, reservations, and staff

• Develop a user-friendly interface for staff to manage reservations, check-ins, and check-outs

• Implement a payment system to handle transactions and generate invoices

• Incorporate a feedback system for guests to rate their experience and provide suggestions for improvement

• Integrate with third-party platforms f...read more
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There is a codility test given with one coding and one test cases

Q1. LRU cache and its implementation
Ans. 
LRU cache is a data structure that stores the most recently used items, discarding the least recently used items when full.
• LRU cache stands for Least Recently Used cache

• It is typically implemented using a combination of a doubly linked list and a hashmap

• When a new item is accessed, it is moved to the front of the list. If the cache is full, the least recently used item at the end of the list is removed

• Example: If the c...read more
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Q1. What is transaction management and how is it handled in microservices
Ans. 
Transaction management is the process of ensuring data consistency and integrity in a system.
• In microservices, each service has its own database, making distributed transactions challenging.

• Two popular approaches to handle transaction management in microservices are Saga pattern and two-phase commit protocol.

• Saga pattern involves breaking a transaction into multiple smaller transactions that can be rolled back individu...read more
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Q2. Statefull vs stateless
Ans. 
Stateful vs stateless refers to whether a system retains information about the state of a user's interactions.
• Stateful systems store client session information on the server side, requiring more resources and making scaling more complex.

• Stateless systems do not store client session information, making them easier to scale and more fault-tolerant.

• Stateful systems are typically used for applications that require maintain...read more
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Basic DSA questions involving string and stack DS

Q1. Questions on DSA and Sql
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Round duration - 140 minutes
Round difficulty - Medium

Test timing was at 2:00 pm , it was conducted in a college and the environment was good for the test. Camera was a primary part of test, so no suspicious activity.

Q1. 
Sum of Two Numbers Represented as Arrays
Given two numbers in the form of two arrays where each element of the array represents a digit, calculate the sum of these two numbers and return this sum as an ar...read more
Ans. 
Given two numbers represented as arrays, calculate their sum and return the result as an array.
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other by considering the remaining digits

• Ensure the final sum array does not have any leading zeros
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Round duration - 20 minutes
Round difficulty - Easy

The round was conducted at around 12 p.m. I was called at the college location and then it was conducted. The interviewer was quite polite and frank.

Round duration - 8 minutes
Round difficulty - Easy

This round was conducted right after finishing and clearing the technical round at the same place and on the same day.