当我用随机数组(范围从0到99)比较平均情况下的冒泡排序和选择排序时,冒泡排序表现明显更好。我读过的大多数有关性能的参考资料都指出选择排序是两者中更好的一个。 这是我的选择实现: public static void selectionSort(int[] arr) { /* * Selection sort sorting algorithm. Cycle: The minimum element form ...
publicstaticint[]Sort(int[]array){//记录数组长度intlength =array.length;//外层循环for(inti=0;i<length-1;i++){//将最小数下标记录为iintmin_index = i;//内层循序 遍历i后边的数组for(intj=i+1;j<length;j++){if(array[j]<array[min_index]){//如果当前遍历到的数小于当前最小索引的对应...
Selection sort is one of the simplest sorting algorithms. It is easy to implement but it is not very efficient. The algorithm divides the input list into two parts: the sublist of items already sorted, which is built up from left to right at the front (left) of the list, and the ...
选择排序是利用逐个选择的方式进行排序,逐个选择出数组中的最小(或最大)的元素,顺序放在已排好序的序列后面,直到全部记录排序完毕。 选择排序(Selection Sort)算法原理: 例如我们有一个数组,我们需要把较小的元素排在前面,把较大的元素排在后面,那么需要选择出最小元素并将其排在序列最前: 从待排序列中选出最...
/** * 选择排序 * @author chenpeng * */ public class SelectionSort { //我们的算法类不允许产生任何实例 private SelectionSort() {} public static void sort(int[] arr) { int n = arr.length; for(int i=0;i<n;i++) { //寻找区间里最小值的索引 int minIndex =i; for(int j=i+1;j...
Java中的经典算法之选择排序(SelectionSort) 神话丿小王子的博客主页 a) 原理:每一趟从待排序的记录中选出最小的元素,顺序放在已排好序的序列最后,直到全部记录排序完毕。也就是:每一趟在n-i+1(i=1,2,…n-1)个记录中选取关键字最小的记录作为有序序列中第i个记录。基于此思想的算法主要有简单选择排序、树...
Implement Java program for selection sort using arrays to sort array elements in ascending order and explains its pros and cons. Selection sort is an in-place comparison sort algorithm. Selection sort has O(n2) time complexity. Selection sort has perform
Selection Sort is an algorithm that works by selecting the smallest element from the array and putting it at its correct position and then selecting the second smallest element and putting it at its correct position and so on (for ascending order). In th
test.algorithm.sort.Selection; import java.util.Arrays; public class TestSelection { public static void main(String[] args) { Integer[] a = {4, 6, 8, 7, 10, 2, 1}; Selection.sort(a); System.out.println(Arrays.toString(a)); } } 测试结果: [1, 2, 4, 6, 7, 8, 10] 3.2....
Sort Algorithm 1. 冒泡排序 依次比较相邻两元素,若前一元素大于后一元素则交换之,直至最后一个元素即为最大;然后重新从首元素开始重复同样的操作,直至倒数第二个元素即为次大元素; 依次类推。如同水中的气泡,依次将最大或最小元素气泡浮出水面。 时间复杂度:O(N*N) 稳定性:稳定 改进1: 改进二: 2选择...