Solve problems that are commonly asked in C++ coding interviews related to common data structures.

Ace the C++ Coding Interview

Data structures are among the fundamentals of computer science and are often a core decision in developing efficient programs. They are categorized as a vital benchmark of computer science knowledge when it comes to industry interviews. This module contains a detailed review of common data structures in C++. We'll also become well-equipped with different data structures by implementing them.
By the end of this module, we'll have expertise in solving problems in data structures.

Data Structures

# Statement

Given the `head` of a singly linked list, return the middle node of the linked list.

If there are two middle nodes, return the second middle node. This happens when the length of the list is even, and the second middle node occurs at $\frac {length}{2}$. Otherwise, if the length of the list is odd, the middle node occurs at $\frac {length}{2}+1$.

**Constraints:**

Let `n` be the number of nodes in a linked list.
* $1 \leq$ `n` $\leq 100$
* $1 \leq$ `node.data` $\leq 100$
* `head` $\neq$ NULL 

# Examples

 Try to solve the Middle of the Linked List problem.

Challenge: Middle of the Linked List

Try to solve the Middle of the Linked List problem.

Challenge 7: Find Middle Node of Linked List

Statement