👉 Sentinelwise is a term in computer science that refers to a type of data structure used for efficiently storing and retrieving elements from a collection. It is similar to a hash table but with an additional layer of structure, allowing for faster access and lookup times. In other words, it's like a sentinel where the last element is stored at the end of the list or array, which means that when you want to retrieve the next item, you only need to look at the last one. This allows
