Explain the selection bubble sort algorithm.

The selection bubble sort algorithm is a simple and commonly used sorting algorithm that works by repeatedly swapping adjacent elements if they are in the wrong order. It gets its name from the way smaller elements "bubble" to the top of the list during each iteration.

The algorithm starts by comparing the first two elements of the list and swapping them if they are in the wrong order. It then moves to the next pair of elements and continues this process until it reaches the end of the list. This first pass ensures that the largest element is placed at the end of the list.

The algorithm then repeats the same process for the remaining elements, excluding the last one which is already in its correct position. It continues to iterate through the list, swapping adjacent elements if necessary, until the entire list is sorted.

Here is the step-by-step explanation of the selection bubble sort algorithm:

1. Start with an unsorted list of elements.
2. Compare the first two elements of the list. If the first element is greater than the second element, swap them.
3. Move to the next pair of elements and repeat step 2. Continue this process until the end of the list is reached.
4. After the first pass, the largest element will be in its correct position at the end of the list.
5. Repeat steps 2-4 for the remaining elements, excluding the last one which is already sorted.
6. Continue iterating through the list, performing swaps if necessary, until the entire list is sorted.

The selection bubble sort algorithm has a time complexity of O(n^2), where n is the number of elements in the list. This means that the algorithm's performance decreases significantly as the size of the list increases. However, it is relatively easy to understand and implement, making it a popular choice for small lists or educational purposes.