10+ TGHY TrustRock Interview Questions and Answers

Time and Space Complexity refers to the efficiency of an algorithm in terms of time and space usage.

• Time Complexity: Measures the amount of time an algorithm takes to run as a function of the input size.

• Space Complexity: Measures the amount of memory an algorithm requires as a function of the input size.

• Time and space complexity help in analyzing and comparing different algorithms based on their efficiency.

• Common notations used to represent time and space complexity are Big O...read more

Object-oriented programming concepts are principles that help in designing and implementing software solutions using objects and classes.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class)

• Inheritance: Ability of a class to inherit properties and behavior from another class

• Polymorphism: Ability to present the same interface for different data types

• Abstraction: Hiding the complex implementation details and showing only the necessary feat...read more

Reverse a linked list

• Iteratively swap the next and previous pointers of each node

• Use three pointers: current, previous, and next

• Update the head pointer to the last node after reversing

The super keyword in programming is used to access and call functions or variables from a parent class.

• Used in object-oriented programming languages like Java, C++, and Python

• Helps in achieving method overriding and method hiding

• Example: super.methodName() or super.variableName

Sorting in Python refers to arranging elements in a list in a specific order.

• Sorting can be done using built-in functions like sorted() or sort()

• Elements can be sorted in ascending or descending order

• Sorting can be done based on custom key functions

The 'in' keyword in Python is used to check if a value exists in a sequence (list, tuple, string, etc.)

• Used to check if a value is present in a sequence

• Returns True if value is found, False otherwise

• Can be used with lists, tuples, strings, dictionaries, etc.

The difference of the list between strings is the unique strings present in each list.

• Create two lists of strings

• Identify the unique strings in each list

• Compare the unique strings to find the difference

A tuple in Python is an immutable collection of elements, similar to a list but cannot be changed once created.

• Tuples are created using parentheses ()

• Elements in a tuple can be of different data types

• Tuples can be accessed using indexing or slicing

• Tuples are faster than lists as they are immutable

A dictionary in Python is a collection of key-value pairs, where each key is unique and maps to a corresponding value.

• In Python, dictionaries are created using curly braces {} and key-value pairs separated by colons.

• Keys in a dictionary must be immutable objects, such as strings, numbers, or tuples.

• Values in a dictionary can be of any data type, including lists, tuples, or even other dictionaries.