 Exercises:   1. Triangle Categorisation    Given the numerical lengths of the 3 sides of a triangle, return the type of triangle formed by these 3 sides.    2. Word Reversal    For any given sentence, reverse the characters of each word in the sentence.    3. Linked List Traversal    Given a singularly linked list of integers, return the 5th integer from the end of the list using the most efficient method.