Intellect Design Arena System Engineer Interview Questions and Answers

Simple aptitude questions focing on english

Q1. All java basic and advanced questions
Add your answer
Q2. Remove duplicatefrom string
Ans. 
Use a set to remove duplicates from a string
• Create a set to store unique characters

• Iterate through the string and add each character to the set

• Convert the set back to a string to get the result
Answered by AI
Add your answer
Q3. Write star pattern
Add your answer
Q4. Find length of string they give string
Ans. 
Use the length() function to find the length of the given string.
• Use the length() function in programming languages like Java, Python, C++, etc.

• For example, in Java: String str = 'hello'; int length = str.length();

• Make sure to handle edge cases like empty strings or null values.
Answered by AI
Add your answer
Q5. Replace characters from string
Add your answer

Q1. Prime number using any popular language
Ans. 
A prime number is a number greater than 1 that can only be divided by 1 and itself.
• Use a loop to check if the number is divisible by any number other than 1 and itself

• Start checking from 2 up to the square root of the number for efficiency

• If the number is only divisible by 1 and itself, it is a prime number
Answered by AI
Add your answer
Q2. Reverse string using any popular language
Add your answer

Prepared jeneral Aptitude

Technical and coding questions

Round duration - 30 minutes
Round difficulty - Easy

Technical round with questions based on core Java concepts.

Q1. Can we use a static method in an interface?
Ans. 
Yes, static methods can be used in interfaces in Java.
• Static methods in interfaces were introduced in Java 8.

• Static methods can be called using the interface name.

• Static methods in interfaces are used for providing utility methods.

• Example: interface MyInterface { static void myMethod() { System.out.println("Static method in interface"); }}
Answered by AI
Add your answer
Q2. How can we achieve polymorphism in Java?
Ans. 
Polymorphism in Java can be achieved through method overloading and method overriding.
• Method overloading: Having multiple methods in the same class with the same name but different parameters.

• Method overriding: Subclass provides a specific implementation of a method that is already provided by its superclass.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Example: Animal...read more
Answered by AI
Add your answer
Q3. What is the difference between an abstract class and an interface in Java?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have constructors, member variables, and methods with implementation.

• Interface can only have abstract methods and constants.

• A class can implement multiple interfaces but can only extend one abstract class.

• Example: abstract class Animal { abstract void sound(); void eat() { // implementation ...read more
Answered by AI
Add your answer