TO THE NEW Diploma Trainee Engineer Interview Questions and Answers

Q1. Previous projects, Basic React Questions and Node js questions.
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Fetching data from api, DSA question (Queue implementation)

Q1. Salary and package discussion
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Q1. Managerial round - just project explanation
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Q1. Java hash map and how it works
Ans. 
Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap in Java implements the Map interface and allows null keys and values.

• It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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When I was join there no assignment I think now they conducting

Q1. Check the basic knowledge of our skills
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Q2. Need write programs
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Q1. Check the in-depth knowledge about our work
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Q1. Discuss salary details
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Q1. 1.SOLID Principles: Define in detail the solid principles, interviewer will be more focused on the practical examples of the principles.
Ans. S stands for single responsibility, O stands for Open for extension and closed for modification, L stands for Liskov Substitution principle, I stands for Inversion of control and D stands for Dependency inversion
Answered by Sweta Lavania
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Q1. Coding questions like implement linked list
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Q2. Find the second largest element from the array.
Ans. 
Find the second largest element from the array.
• Sort the array in descending order and return the second element.

• Iterate through the array and keep track of the two largest elements.

• Use a priority queue to find the second largest element.
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Q3. Sort the array and return second last element
Ans. 
Sort array and return second last element
• Use built-in sort function

• Access second last element using array index -2
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Q1. Questions from past projects
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Q2. Questions from Process
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It was medium level question

Q1. It was regarding react-native
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Q1. Wat is singleton class, difference bw hashmap and concurrent hashmap
Ans. 
Singleton class is a class that can only have one instance, while HashMap is not thread-safe but ConcurrentHashMap is.
• Singleton class restricts instantiation to one object, ensuring a single instance throughout the application.

• HashMap allows multiple threads to access and modify it concurrently, which can lead to data corruption in a multi-threaded environment.

• ConcurrentHashMap is thread-safe and allows multiple thread...read more
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Q1. Had questions related to data structures
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Q1. Related to work culture and salary related details
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