packagesorting;importjava.util.Arrays;importorg.junit.Test;publicclassBubbleSorting {int[] items = { 4, 6, 1, 3, 7};intstep = 0;//① 相邻//② 差一步//③ n个数可产生 n-1 对@Testpublicvoidsort() {for(;;) {booleanswapped =false;for(inti = 0; i < items.length - 1; i++) ...
Worse case: O(n^2) 2. Insertion Sort 定义:当前element 的之前所有elements 都已排好序。把当前element 放进之前排好序的数列中的正确位置。(当前的element从后向前比较) Insertion sort takes advantage of the presorting. It requires fewer comparision than bubble sort 1 2 3 4 5 fori =1to n -1...
void internalMergeSort(vector<int> &arr, vector<int> &tmp, int left, int right) { if (left < right) { int mid = (left + right) >> 1; internalMergeSort(arr, tmp, left, mid); internalMergeSort(arr, tmp, mid + 1, right); mergeSortedArray(arr, tmp, left, mid, right); } }...
Bubble sort algorithm works by iterating through the given array multiple times and repeatedly swapping adjacent elements until all elements in the array are sorted.
public static void selectionSort(int[] arr) { /* * Selection sort sorting algorithm. Cycle: The minimum element form the * unsorted sub-array on he right is picked and moved to the sorted sub-array on * the left. * * The outer loop runs n-1 times. Inner loop n/2 on average. th...
2. Bubble sort 【O(n^2)】 两个小指针一前一后沿着list走,为保证一个对应的值总比另一个对应的值大,如果不是这样就把他们对调。它俩走一轮一般无法sort好,所以得多溜达几轮,反正也有伴儿... 长得也算顺眼吧 3.Insertion sort 【O(n^2)】 ...
Quicksort the left and right partitions Note: this algorithm gets confusing when you have to keep track of the pointers and where to swap in the pivot Notes If a bad pivot is chosen, you can imagine that the “less” subset is always empty. That means we are only creating a subset of...
1)Insertion Sort 简单插入排序: 2)Shell sort(希尔排序):突破n^2 交换排序 3)Bubble sort:两两比较 4)Quicksort 选择排序 5)Selection Sort选择排序:选出最小的 6)Heap sort (堆排序,二叉树的代言人): 稳定的nlog,平常一般不用,常数太大 归并排序 7)Merge sort(分治DC的典型代表) 非比较类排序: 8)Co...
The time and space complexities of the Bubble Sort algorithm are as follows: Time Complexity:Time complexityis a measure of the amount of time an algorithm takes to complete as a function of the size of the input. Worst Case: O(n^2) – This happens when every element in the input array...
In the Bubble sort algorithm, we sort an unsorted array by starting from the first element and comparing with adjacent elements. If the former is greater than the latter then we swap and by doing this we get the largest number at the end after the first iteration. So in order to sort ...