Cisco Software Developer Interview Questions and Answers

Implement a Stack data structure using a Singly Linked List with operations in O(1) time.

• Create a class named Stack with getSize, isEmpty, push, pop, and getTop methods.

• Use a Singly Linked List to store the elements of the stack.

• Ensure each operation runs in constant time complexity.

• Handle edge cases like empty stack appropriately.

• Example: If input is '5 3 10 5 1 2 4', the output should be '10 1 false'.

Find the minimum number of dice throws required to reach the last cell on a 'Snake and Ladder' board.

• Start from the bottom left cell and move according to dice outcomes (1-6).

• Utilize snakes and ladders to reach the last cell faster.

• Keep track of the minimum number of throws required to reach the last cell.

• If unreachable, return -1 as output.

Object Oriented Programming concepts include encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class). Example: Class Car with properties like color and methods like drive().

• Inheritance: Creating new classes based on existing classes, inheriting their attributes and methods. Example: Class SUV inheriting from class Car.

• Po...read more

Check if two strings are anagrams of each other by comparing their sorted characters.

• Sort the characters of both strings and compare them.

• Use a dictionary to count the frequency of characters in each string and compare the dictionaries.

• Ensure both strings have the same length before proceeding with comparison.

• Example: For input 'spar' and 'rasp', after sorting both strings, they become 'aprs' which are equal, so r...read more

A static member in C++ is a member of a class that is shared among all instances of the class.

• Static members are declared using the 'static' keyword.

• They are not associated with any specific instance of the class, but rather with the class itself.

• They can be accessed using the scope resolution operator '::'.

• Static members are commonly used for constants, utility functions, or shared data among all instances of a c...read more

Add two numbers represented as linked lists in reverse order and return the sum as a linked list.

• Traverse both linked lists simultaneously while keeping track of carry.

• Create a new linked list to store the sum digits.

• Handle cases where one list is longer than the other or there is a final carry.

• Remember to reverse the final linked list before returning the head.