HackerRank Backend Developer Intern Interview Questions and Answers

Q1. Implement tail f
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Aptitude test such as profit and loss , blood relations

Questions on string and map

Q1. Questions like will you be able to work after your assigned time
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Q1. Coding question on DSA
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Q2. Design pattern followed by basic java questions
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Q1. Design patterns in java
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Design patterns in Java are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable code.

• Some common design patterns in Java include Singleton, Factory, Observer, and Strategy.

• Each design pattern has its own purpose and can be applied in different scenarios.

• Design patterns promote code reusability and help in organizing code in a structured manner.
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Q2. Database designing and java8
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Basic questions of dbms ,os

Q1. Delete middle node of linked list
Ans. 
To delete the middle node of a linked list, we can iterate through the list to find the middle node and then remove it by adjusting the pointers.
• Iterate through the linked list to find the middle node by using two pointers - one moving one node at a time and the other moving two nodes at a time.

• Once the middle node is found, adjust the pointers to skip over the middle node and connect the nodes before and after it.

• Hand...read more
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Q2. N queen problem
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Consist 3 coding questions medium level

Q1. Asked about java concept
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Q2. Sql query basics
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Q1. Asked medium to advance level oops java concept
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Q2. Deep discussion over project
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Q1. Hard level linked list questions
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Q2. Advanced level sql query
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Q1. Strings related coding question
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Q1. Files, os and db related questions
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Dsa questions asked and java basic questions

Q1. DB Schema Design
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Q1. REST API, SQL and SOLID Principles
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Q1. Resume Based Round with Manager
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Q1. It was basically a salary negotiation round.
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