Sigma Solve Laravel Developer Interview Questions and Answers

Q1. I don't know why they rejected me
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Q2. What ever they asked me for coding part the output is correct and logic is also correct
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Node js vs express, var and const in js, cors

Q1. Javascript MCQs and one coding question
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Q1. 3 coding questions, Questions on Resume and Node.js. Scenario based questions.
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Q1. Questions on project. Behavioural questions.
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Java related and programming questions

Q1. Java basic questions
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Q2. Springboot and Database question
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Q3. Problem Solving subsequence longest
Ans. 
Find the longest subsequence in an array of strings
• Iterate through the array of strings and compare each string with the next one to find the longest common subsequence

• Use dynamic programming to efficiently find the longest common subsequence

• Example: ['abc', 'abg', 'bdf', 'aeg', 'acefg'] - The longest subsequence is 'aeg'
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Q1. They asked about spring security. and asked one problem to solve
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Q1. What's Lazy loading
Ans. 
Lazy loading is a technique used in software development to defer the loading of resources until they are actually needed.
• Lazy loading improves performance by only loading resources when necessary

• It is commonly used in web development to load images or data as the user scrolls down a page

• Lazy loading can also be used in programming languages to load classes or modules on-demand
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Q1. What's Authentication and authorisation in nodejs
Ans. 
Authentication is the process of verifying the identity of a user, while authorization determines what resources a user can access.
• Authentication is the process of verifying the identity of a user.

• Authorization determines what resources a user can access.

• In Node.js, authentication and authorization can be implemented using various libraries and techniques such as Passport.js, JSON Web Tokens (JWT), and role-based acces...read more
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Round duration - 60 Minutes
Round difficulty - Medium

This was the DSA questions round. There were 2 questions. and both were basic questions.

Q1. Check If Linked List Is Palindrome
You are given a Singly Linked List of integers. You have to find if the given linked list is palindrome or not.
A List is a palindrome if it reads the same from the lef...read more
Ans. Using Stack
The idea is to store the list values in a stack and then compare the values in the list with the values in the stack.
 
Algorithm:
1. Traverse the list from head to tail and push every node in the stack.
2. Make a pointer ‘cur’ which initially points to the head node.
3. If value at ‘cur’ is not equal to the top element of the stack, then the given list is not a palindrome
4. Else, move the ‘cur’ pointer to its next node...read more
Answered by CodingNinjas
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Q2. Segregate Odd-Even
There is a wedding ceremony at NinjaLand. The bride and groom want everybody to play a game and thus, they have blindfolded the attendees. The people from the bride’s side are holding od...read more
Ans. Iterative Approach 1
As we have to arrange the nodes such that all the odd nodes should come before all the even nodes, we can move all the even valued nodes from their current positions to the end of the linked list. 
 
Algorithm:
 
• Initialise a pointer ‘LAST_NODE’ by NULL.
• Traverse the linked list to the end and get the last node of the list which will be pointed by ‘LAST_NODE’.
• Initialize a pointer ‘NEW_END’...read more
Answered by CodingNinjas
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Round duration - 90 Minutes
Round difficulty - Easy

This was a subjective round where we have to code HTML, CSS, and JS. We were not allowed to use any external editor and their editor was just plain notepad so we couldn't even see the output but still, we completed it. Everyone at my college passed this round.

Q1. Frontend Development Questions
Create a Stopwatch using HTML, CSS, and JS
Create an input form using HTML, CSS, and JS
Create some basic structure using HTML, CSS, and JS. I can't remember it but it was also ...read more
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Round duration - 10080 Minutes
Round difficulty - Easy

Q1. Assignment
We were given a Figma link for a landing page of a website. We need to pixel-perfect that design.
Ans. 
Tip 1 : You MUST work with Figma first. Some of my friends never worked with Figma before and they couldn't even export the images properly. 
Tip 2 : Use the pixel-perfect extension from the chrome web store. 
Answered by CodingNinjas
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Round duration - 120 Minutes
Round difficulty - Medium

In this round, the interviewer asked me to turn on screen mirroring. And then he gave me 1 more design which I needed to create in front of him in the next 2 hours. In the previous round, the focus was on HTML and CSS but in this round, the major focus was on JS. You are allowed to use google but not copy-paste the whole code.

Q1. Designing Question
I was told to build a compound interest calculator where we need to store the previous calculation, ability to modify/delete them. There were 2 bonus features like store data in local sto...read more
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Round duration - 90 Minutes
Round difficulty - Hard

This was an online interview with one of their employees. My interview was taken by their front-end lead. She was very helpful during the interview. You are allowed to search for documentation.

Q1. Technical Questions
Get the frogs and the lilypads line up in order (e.g. yellow lilypad is the first among all other lilypads and yellow frog is first among all other frogs) using flex-direction. 
Arra...read more
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Round duration - 90 Minutes
Round difficulty - Easy

This was also a front-end interview round. The interviewer was again very helpful and I was allowed to google.

Q1. Technical Questions
First, he asked me about different meta tags in HTML and different types of CSS media queries.
Then he asked me questions about Promise and async-await. I need to create a function that t...read more
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