Meritto Senior PHP Developer Interview Questions and Answers

Kadance algorithm and find the middle of the linklist

More on java and Python based coding questions

Q1. Behavioural questions were asked
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Q2. What are your expectations from this job
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Q3. What are your plans ahead
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Q4. Where do you see yourself in 5 years ahead
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Leecode medium level question

Leetcode Hard level Question

Q1. This is cto round asked some interview questions
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Computer Fundamentals

Q1. Flatten a binary tree
Ans. 
Flatten a binary tree by converting it into a linked list in-place.
• Use a recursive approach to flatten the binary tree.

• Traverse the tree in a pre-order manner and keep track of the previous node.

• Set the left child of each node to null and the right child to the next node in the linked list.

• Example: Input: 1 -> 2 -> 5 -> 3 -> 4 -> null, Output: 1 -> null -> 2 -> null -> 3 -> null -> 4 -> null -> 5 -> null
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Q1. Senior taking technical round
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Q1. Manger Taking technical round
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Q1. Salary Discussion
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Q1. Design Questions to build a scalable micro service
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Q2. Salary Discussion
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Q1. How can we improve the performance of a Front End System
Ans. 
Improving Front End System Performance
• Optimize images and reduce their size

• Minimize HTTP requests and use caching

• Use lazy loading for images and videos

• Reduce the number of DOM elements

• Use a Content Delivery Network (CDN)

• Minimize the use of external scripts and plugins

• Use asynchronous loading for scripts

• Optimize CSS and JavaScript files

• Use browser caching

• Implement server-side rendering
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Q2. What is Event Loop and give an example on how it works.
Ans. 
Event Loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.
• Event Loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.

• It prioritizes the tasks in the queue and pushes them to the call stack when it's empty.

• This allows JavaScript to handle I/O operations and other asynchronous tasks without blocking the main thread.

• Example: setTimeout() function ad...read more
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Q1. 2 question on Data structure and algorithms (easy-medium and medium level questions)
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Q2. Related to array and matrix
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Q1. This also contained discussion on last company project and some basic question regarding different tech stack used. Then asked 2 questions on Data structure and algorithms (both medium level questions)
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Q2. Related to stack and linked list
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Q1. This was the Hiring Manager round. He asked different questions related to general programming like - Rest, Http, Websockets, TCP. Asked some questions from past company projects. Then asked one easy-mediu...read more
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Q2. Programming and Math related topics
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Q1. 2 DSA leetcode (1 medium , 1 hard)
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Q1. Same round 1 2 DSA leetcode questions (1 hard , 1 medium)
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Q1. It was the hiring manager round, it started with the LRU cache algorithm and went deep in the system design
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