Algorithms are really important in computer science. They help us solve problems by following specific steps. Let’s look at the main types of algorithms:

1. Sorting Algorithms: These help to organize data. Here are two examples:

   • Bubble Sort: This method is not very fast, with a time complexity of $O(n^2)$.
   • Quick Sort: This one is usually faster, averaging around $O(n \log n)$.

2. Search Algorithms: These are used to find specific pieces of data.

   • Linear Search: This method checks each item one by one, which takes $O(n)$ time.
   • Binary Search: This is quicker and can find items in $O(\log n)$ time if the data is sorted.

3. Graph Algorithms: These look at connections between different items, like Dijkstra’s algorithm, which helps find the shortest path in a graph.

By understanding these algorithms, we can solve problems more efficiently and effectively.