希尔排序排序

希尔排序

目录希尔排序介绍：希尔排序分组：算法步骤：输入：输出：算法理解：实例代码：复杂度分析：时间复杂度：空间复杂度：希尔排序介绍：希尔排序实际上就是将一组数据进行分组排序（等距元素为一组进行排序），在每一组内进行直接插入排序，让...

希尔排序

插入排序在对几乎已经排好序的数据操作时，效率高，即可以达到线性排序的效率但插入排序一般来说是低效的，因为插入排序每次比较后只能将数据移动一个位置希尔排序是把记录按下标的一定增量分组，对每组使用直接插入排序算法排序；...

希尔排序

希尔排序 通过比较相距一定间隔的元素来工作，各趟比较所用的距离随着算法的进行而减小，直到只比较相邻元素的最后一趟排序为止。所以希尔排序也叫缩小增量排序。希尔排序使用一个序列h1，h2，.，hn，叫做增量序列，只要h1=1，任何增量序列...

希尔排序

一，概念：希尔排序是希尔（Donald Shell）于1959年提出的一种排序算法。希尔排序也是一种插入排序，它是简单插入排序经过改进之后的一个更高效的版本，也称为缩小增量排序，同时该算法是冲破O(n2）的第一批算法之一二，复杂度：希尔排序...

希尔排序

③在希尔排序开始时增量较大，分组较多，每组的记录数目少，故各组内直接插入较快，后来增量di逐渐缩小，分组数逐渐减少，而各组的记录数目逐渐增多，但由于已经按di-1作为距离排过序，使文件较接近于有序状态，所以新的一趟排序过程也较快...

希尔排序

}原理：缩小增量希尔排序属于插入类排序,是将整个有序序列分割成若干小的子序列分别进行插入排序。排序过程：先取一个正整数d1，把所有序号相隔d1的数组元素放一组，组内进行直接插入排序；然后取d2，重复上述分组和排序操作；直至di=1，即...

希尔排序

} public static void ShellSort(int a[])/希尔排序 { int i,j,gap;for(gap=a.length/2;gap>=1;gap=gap/2)/步长 { for(i=gap;i;i+){ int temp=a[i];保存a[i]的值 j=i-gap;从i=0开始 while(j>=0&temp[j])/直接插入排序 { a[j+gap]=a[j];j-=...

排序四 希尔排序

减小增量 } } 算法分析 希尔排序的算法性能排序类别排序方法时间复杂度空间复杂度稳定性复杂性平均情况最坏情况最好情况插入排序 希尔排序 O(Nlog2N)O(N1.5)O(1)不稳定较复杂时间复杂度步长的选择是希尔排序的重要部分。...

排序四 希尔排序

排序——希尔排序

希尔排序的基本思想希尔排序又称缩小增量排序，因 DL.Shell于 1959 年提出而得名。先将待排序表按照一定的间隔分割成多个子表，对各个子表分别进行直接插入排序。缩小增量d，重复上述过程，知道d=1 为止。步骤过程演示初始序列第一趟，初始...

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智能开放搜索OpenSearch

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