valikorraldus

Valikorraldus, also known as selection sorting or direct selection sorting, is a simple and intuitive sorting algorithm that works by repeatedly selecting the smallest (or largest, depending on sorting order) element from the unsorted portion of the list and moving it to the sorted portion of the list. The algorithm maintains two sublists in a given list: the sublist of items already sorted, which is built up from left to right at the front (left) of the list, and the sublist of items remaining to be sorted that occupy the rest of the list. Initially, the sorted sublist is empty and the unsorted sublist is the entire list. The algorithm proceeds by finding the smallest (or largest) element in the unsorted sublist, swapping it with the leftmost unsorted element (putting it in sorted order), and moving the sublist boundaries one element to the right.

The time complexity of valikorraldus is O(n^2) in the average and worst cases, where n is the number of items being sorted. This makes it less efficient on large lists compared to more advanced algorithms such as quicksort, mergesort, or heapsort. However, valikorraldus has the advantage of being easy to implement and understand, making it a good choice for educational purposes or for sorting small lists.

Valikorraldus is not a stable sorting algorithm, meaning that it does not preserve the relative order of equal elements in the sorted output. This can be a disadvantage in certain applications where the order of equal elements is important. Despite this, valikorraldus remains a useful and widely known sorting algorithm due to its simplicity and educational value.