Q: How to apply Min-Heap & Max-Heap concepts?

Parent nodes are called max-heaps and child nodes are called min-heaps. Once heap is built out of unsorted data, the very first element is the smallest or largest value (based on Max-Heap or Min-Heap).

Q: What are exceptions in Java?

It is a run-time error that interrupts the normal flow of program execution/compilation. It is an object that wraps any erroneous event inside a method and contains details about the error like itu2019s type.

Q: What are strings in Java?

Unlike general perception that string is a meaningful sentence, it is rather an object that represents a random sequence of char values, which may or may not make sense.

Q: Which is the best RDBMS?

Best Relational Database Management Systems according to me are Amazon Aurora, Amazon RDS, Oracle Database 12c, & Microsoft SQL Server.

Q: What are the ACID properties in database?

ACID stands for atomicity, consistency, isolation, and durability. These properties guarantee validity of data.

Question 1

What is your understanding of heap sort algorithm?

Accepted Answer

It is an in-place sorting technique that has no quadratic worst-case running time. Heap is a special tree-based data structure and all nodes are either >= or <= each of its children.

Question 2

How to apply Min-Heap & Max-Heap concepts?

Accepted Answer

Parent nodes are called max-heaps and child nodes are called min-heaps. Once heap is built out of unsorted data, the very first element is the smallest or largest value (based on Max-Heap or Min-Heap).

Question 3

What are exceptions in Java?

Accepted Answer

It is a run-time error that interrupts the normal flow of program execution/compilation. It is an object that wraps any erroneous event inside a method and contains details about the error like itu2019s type.

Question 4

What are strings in Java?

Accepted Answer

Unlike general perception that string is a meaningful sentence, it is rather an object that represents a random sequence of char values, which may or may not make sense.

Question 5

Which is the best RDBMS?

Accepted Answer

Best Relational Database Management Systems according to me are Amazon Aurora, Amazon RDS, Oracle Database 12c, & Microsoft SQL Server.

Question 6

What are the ACID properties in database?

Accepted Answer

ACID stands for atomicity, consistency, isolation, and durability. These properties guarantee validity of data.

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