Hughes Systique Corporation Mean Stack Developer Interview Questions and Answers

Q1. Explain joins in SQL
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• ...read more
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Q2. What are object and class in OOPs?
Ans. 
Objects are instances of classes in OOPs. Classes are blueprints for creating objects with attributes and methods.
• Objects are instances of classes

• Classes are blueprints for creating objects

• Classes define attributes and methods for objects

• Example: Class 'Car' with attributes like 'color' and methods like 'drive'
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Start of The Loop in LinkedList.
Length of Loop in LinkedList

API Contract for Notification sending via SMS and Email

Core Java , DS and Algo

Q1. LLD Spotify only structure
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Q2. Shortest path algorithm
Ans. 
Shortest path algorithm finds the shortest path between two nodes in a graph.
• Dijkstra's algorithm is a popular shortest path algorithm that uses a priority queue to find the shortest path in a weighted graph.

• A* algorithm is another popular shortest path algorithm that uses heuristics to guide the search towards the goal node.

• Bellman-Ford algorithm is used for finding the shortest path in a graph with negative edge weig...read more
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Q1. Reason for the change
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Q2. What you bring to the table
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Q1. Basically all about your personal skills
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Q2. Project level knowledge.
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Arrays and Pointers code

Q1. Project related questions
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Q2. Oops concept html css sql
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Building small UI screen application in 1 hr for frontend developer

Q1. Graph traversal question
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Q2. React js questions
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Q3. Javascript output guessing question
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It was very tough all questions are from leetcode hard level

Q1. Javascript Questions (Closure, hoisting, throttle, debounce)
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