3 > 5? No We know that 7 and 8 are in sorted, so pass 3 is over. Swap: 0, 3, 5, 7, 8 We know 8 is in place so pass 2 has only 3 Limit the range of every pass after the first. Know that we don't need to swap those elements. Second greatest number will take its place, too. Its final place? It is easy to notice that after the second pass the Sort? Do you remember that after the first pass the biggest number took Problem, because the swapping is generally slower operation than theĬan we improve the efficiency of the original bubble Limit the number of comparisons in each passĪs you can see the algorithm does many unnecessary comparisons.Īlso it does many swaps of elements and this is a problem. Printf( "Basic bubble sort finished, using %d iterations. Void bubbleSortBasic( int array, int size) That the array is already sorted, but the algorithm needs to do two more passes to complete. You may notice that the biggest number in the array 8 moved toĨ 1. 8 > 5? -Yes => Swap: 7, 0, 3, 5,Ĩ With this we reached the end of the array and the first pass is This way the larger “bubbles” make their way to the top.Īs usual, we will follow one example step by step: Sort the array: If the compared elements are in the wrong order, they swap their Step of the pass compares the current element to its right neighbor. Starts from the beginning of the array and goes towards the end. The bubble sort makes n - 1 passes through the array. Interesting problems and optimizations that are useful for studying Despite being useless in practice, bubble sort offers some If you need to sort a small amount of data and want to avoid the overhead and the complex code of the advanced algorithms, go for the insertion sort. It is relatively easy to implement, but is too slow to be used in practice.Īdvertise on this site. It has a best case of O(n) when the input array is already sorted or nearly sorted. It has an average complexity of O(n 2), where 'n' is the number of elements to be sorted. Bubble sort is a stable comparison algorithm.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |