Chubb Software Developer Intern Interview Questions and Answers

Round duration - 60 minutes
Round difficulty - Easy

It was an online one on one call that was taken. Like many others, even i too got formal and straight forward with my interviewers. It was pretty good despite the connectivity issues. I have gained by the way they were asking me questions as the nature of the call was quite amicable. It was pretty good as it was during the day for me.

Q1. 
Longest Common Subsequence Problem Statement
Given two strings, S and T with respective lengths M and N, your task is to determine the length of their longest common subsequence.
A subsequence is a seque...read more
Ans. Memoization
Let the two strings be x and y. 
Let x(i) be the substring of x from index 0 to index i. 
Let c[i, j] be the length of the longest common subsequence of strings x(i) and y(j).
Then the recurrence relation to find c[i, j] is as follows:
We can use this relation to write a simple recursive program but instead of recomputing the results of subproblems, compute them just once and store their results in a l...read more
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Round duration - 60 minutes
Round difficulty - Easy

It was during the night. I was to attend an one on one interview. Though it was a shaky start in the beginning, sporadically i picked up. The affable nature of the interviewer made me feel special and comfortable. He not only asked me normal interview questions but also took me through the technical aspects of an interview and i could get them all!

Q1. 
Count Subsequences Problem Statement
Given an integer array ARR of size N, your task is to find the total number of subsequences in which all elements are equal.
Explanation:
A subsequence of an array i...read more
Ans. 
Step 1 : I first applied bubble sort. It was not good enough.
Step 2 : Interviewer asked me to optimise the solution.
Step 3 : Then I gave solution with merge sort and interviewer was happy.
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After 3 sections of aptitude, English and core subjects, there were two coding problems both based on string one was easy and other was medium.

Q1. Explain the projects in your resume
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines
• Utilized HTML, CSS, JavaScript for front-end development

• Used PHP and MySQL for back-end functionality

• Implemented user authentication and authorization features

• Integrated calendar and notification system for task reminders
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Q2. Explain the backend side of your project
Ans. 
The backend of my project is responsible for handling server-side logic and data processing.
• Implemented RESTful APIs for communication between frontend and backend

• Used Node.js and Express for server-side scripting

• Utilized MongoDB for database management

• Implemented authentication and authorization using JWT tokens
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Q3. How did you implement concepts of OOP in your projects
Ans. 
I implemented concepts of OOP in my projects by creating classes, objects, inheritance, encapsulation, and polymorphism.
• Used classes to represent real-world entities

• Implemented inheritance to reuse code and create a hierarchy of classes

• Utilized encapsulation to hide data and restrict access to it

• Applied polymorphism to allow objects of different classes to be treated as objects of a common superclass
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Q4. How to handle duplicate entries in the database
Ans. 
Duplicate entries in the database can be handled by using unique constraints, deduplication scripts, or merging duplicate records.
• Use unique constraints in the database schema to prevent duplicate entries.

• Implement deduplication scripts to regularly scan and remove duplicate records.

• Merge duplicate records by updating one record with the information from the other duplicate record.
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Q5. Write a code to tell whether a string is palindrome or not
Ans. 
Code to check if a string is a palindrome or not
• Create a function that takes a string as input

• Remove all non-alphanumeric characters and convert to lowercase

• Compare the string with its reverse to check if it's a palindrome
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