Digital Applications Engineer Interview Questions, Process, and Tips

Polymorphism is the ability of an object to take on many forms. Encapsulation is the practice of hiding data and methods within a class. Inheritance is the ability of a class to inherit properties and methods from a parent class.

• Polymorphism allows objects to be treated as if they are of different types.

• Encapsulation helps to protect data from outside interference and misuse.

• Inheritance allows for code reuse and promot...read more

Stacks are a data structure that follows the Last-In-First-Out (LIFO) principle. They are used to store and retrieve data in a specific order.

• Stacks have two main operations: push (to add an element to the top) and pop (to remove the top element)

• Examples of stacks include the call stack in programming languages, undo/redo functionality in text editors, and the back button in web browsers

C++ is better than C due to its object-oriented programming features and better memory management.

• C++ supports object-oriented programming while C does not.

• C++ has better memory management with features like constructors and destructors.

• C++ has more advanced features like templates and exceptions.

• C++ is more versatile and can be used for both low-level system programming and high-level application development.

• C++ has a...read more

Python is easier to learn, has simpler syntax, and is more versatile than C++.

• Python has a simpler syntax and is easier to read and write than C++.

• Python is an interpreted language, which means it doesn't need to be compiled before running.

• Python has a vast library of modules and packages that can be easily imported and used.

• Python is more versatile than C++ and can be used for a wide range of applications, including w...read more

Find all possible combinations of 2 elements in an array of length N whose sum is 10.

• Iterate through the array and for each element, check if there exists another element in the array whose sum is 10.

• Use a nested loop to compare each element with every other element in the array.

• Store the pairs of elements whose sum is 10 in a new array.

• Return the array of pairs.

Linked list is better than array for dynamic memory allocation and insertion/deletion operations.

• Linked list allows for dynamic memory allocation, while arrays have a fixed size.

• Insertion and deletion operations are faster in linked list as compared to arrays.

• Arrays have better cache locality and are faster for random access.

• Linked list is used in applications like implementing stacks, queues, and hash tables.

• Arrays ar...read more

Binary search finds the position of a target value within a sorted array. Merge sort and bubble sort are sorting algorithms.

• Binary search: repeatedly divide the search interval in half until the target value is found or not found

• Merge sort: divide the unsorted list into n sublists, repeatedly merge sublists to produce new sorted sublists until there is only 1 sublist remaining

• Bubble sort: repeatedly swap adjacent eleme...read more