10+ ISDC Projects Interview Questions and Answers

The task is to determine the total number of ways to make change for a specified value using given denominations.

• Create a dynamic programming table to store the number of ways to make change for each value up to the target value.

• Iterate through each denomination and update the table accordingly based on the current denomination.

• The final value in the table will represent the total number of ways to make change for the target value.

• Consider edge cases such as when the target v...read more

Perform left rotations on an array based on given queries.

• Create a function that takes the array, number of elements, number of queries, and the queries as input.

• For each query, rotate the array by the specified number of elements to the left.

• Return the final array after each rotation query.

An object in Java is an instance of a class that encapsulates data and behavior.

• Objects have state and behavior

• They are created from classes

• They can be used to represent real-world entities or concepts

• Objects can interact with each other through method calls

Method overloading allows creating multiple methods with the same name but different arguments.

• Method signature must differ in number, type, or order of parameters

• Return type can be different but not the only difference

• Example: public void print(int num), public void print(String str), public void print(int[] arr)

• Overloading improves code readability and reusability

Given a string and an integer K, create a new string by selecting the smallest character from the first K characters of the input string and repeating the process until the input string is empty.

• Iterate through the input string, selecting the smallest character from the first K characters each time.

• Remove the selected character from the input string and append it to the new string.

• Continue this process until the input string is empty.

• Return the final new string formed after t...read more

The task is to distribute chocolates among students such that the difference between the largest and smallest number of chocolates is minimized.

• Sort the array of chocolates packets

• Use sliding window technique to find the minimum difference between the largest and smallest number of chocolates distributed to students

• Return the minimum difference

Type casting in Java is the process of converting one data type into another.

• Type casting can be done implicitly or explicitly.

• Implicit type casting is done automatically by the compiler when there is no loss of data.

• Explicit type casting is done manually by the programmer when there is a possibility of data loss.

• Type casting is useful when we want to use a variable of one data type in an expression or assignment of another data type.

• Example: int num = 10; double decimalNum =...read more

Reverse the words in a string without using built-in functions.

• Split the string into an array of words using a space as the delimiter.

• Create a new array and iterate over the words array in reverse order, adding each word to the new array.

• Join the new array of words back into a single string with spaces between each word.

Method overloading is when multiple methods have the same name but different parameters.

• Method overloading allows for more flexibility in method calls.

• The methods must have different parameters, such as different data types or different numbers of parameters.

• Example: public void print(int num) and public void print(String str)

• Overloading constructors is also common in Java.

Basic questions about JavaScript in a software engineering interview

• Explain the difference between '==' and '===' operators

• What is closure in JavaScript?

• How does prototypal inheritance work in JavaScript?

• What is event delegation in JavaScript?

• How do you handle asynchronous operations in JavaScript?

Inheritance in Java allows a class to inherit properties and methods from another class.

• Inheritance is achieved using the 'extends' keyword.

• The class that is being inherited from is called the superclass or parent class.

• The class that inherits from the superclass is called the subclass or child class.

• Subclasses can access the public and protected members of the superclass.

• Inheritance promotes code reusability and allows for the creation of hierarchical relationships.

To write a post query in RestAssured, use the given() method to set request parameters and body, then use the post() method to send the request.

• Use given() method to set request parameters and body

• Use post() method to send the request

• Example: given().param("key", "value").body("{\"name\": \"John\"}").post("/endpoint")

Path params are part of the URL path, while query params are appended to the URL after a '?'

• Path params are used to identify a specific resource in the URL path, while query params are used to filter or sort the results

• Path params are defined in the URL path itself, like /users/{id}, while query params are added after a '?' like /users?role=admin

• Path params are typically used for required parameters, while query params are used for optional parameters

• Example: Path param - /us...read more

Parameters in API testing include path parameters, query parameters, header parameters, and body parameters.

• Path parameters are used to identify a specific resource in the URL path, e.g. /users/{id}

• Query parameters are used for filtering or sorting data, e.g. /users?status=active

• Header parameters contain additional information for the request, e.g. Content-Type: application/json

• Body parameters are used to send data in the request body, e.g. {"name": "John", "age": 30}