Zopsmart Technology Interview Questions and Answers

Q1. Technical round
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Q2. Append element into Array question
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Q1. Vector question on array
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Q1. Vector based question less time complexity
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Two questions were asked with a time duration of 35 minutes. But the problem was that they asked Good Knowledge of Fundamentals of CS and Good Hands on Data Structures, and they just took technical round at the first place. WHY?

Q1. What is string contant pool?
Ans. 
String constant pool is a memory area in Java where unique string literals are stored to optimize memory usage.
• String constant pool is a part of the Java heap memory.

• It stores unique string literals to avoid duplicate storage.

• Strings created using double quotes are stored in the string constant pool.

• Strings created using new keyword are stored in the heap memory.
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Q2. Can we create object for abstract classes and interfaces?
Ans. 
Yes, we can create object for abstract classes and interfaces in Java.
• Objects cannot be created for abstract classes directly, but can be created for concrete subclasses that extend the abstract class.

• Interfaces cannot be instantiated, but objects can be created for classes that implement the interface.

• Example: Abstract class Animal { abstract void makeSound(); } Class Dog extends Animal { void makeSound() { System.out...read more
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Q3. What is the keyword used in interface if we want concreate method?
Ans. 
The keyword used in interface for concrete method is 'default'.
• The 'default' keyword is used in interfaces to provide a default implementation for a method.

• It allows interfaces to have concrete methods without requiring implementing classes to override them.

• Example: 'default void methodName() { // method implementation }'
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30 min exam online test with easy and medium leetcode questions. Precisely Bulls and Cow problem and remove K digits leetcode questions

It was sort of assessment which consists of technical questions and coding round

Q1. It was of more around the technical subjects and college projects
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Q1. It consists of all the technical questions and coding questions , projects etc
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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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