## Reverse a String in Python

This interview question requires you to reverse a string using recursion. Make sure to think of the base case here.

- Algorithm / Data Structure / python

This interview question requires you to reverse a string using recursion. Make sure to think of the base case here.

- Data Structure / python

Given the Stack class below, implement a Queue class using two stacks

- Algorithm / Data Structure / python

Given a string of opening and closing parentheses, check whether itâ€™s balanced. We have 3 types of parentheses: round brackets: (), square brackets: [], and curly brackets: {}.

- Algorithm / Data Structure / python

Given an array of integers (positive and negative) find the largest continuous sum.

- Algorithm / Data Structure / python

Consider an array of non-negative integers. A second array is formed by shuffling the elements of the first array and deleting a random element. Given these two arrays, find which element is missing in the second array.

- Algorithm / Data Structure / python

Big-O Complexity for Python Data Structures

- Algorithm / Data Structure

Big-O (in its simplest form) reduces the comparison between algorithms to a single variable. That variable is chosen based on observations or assumptions

- Data Structure / python

Write a function to reverse a Linked List in place. The function will take in the head of the list as input and return the new head of the list.

- Data Structure / python

Write a function that takes a head node and an integer value n and then returns the nth to last node in the linked list. For example, given:

- Algorithm / Data Structure / python

Given a singly linked list, write a function which takes in the first node in a singly linked list and returns a boolean indicating if the linked list contains a "cycle".