梳排序的基本思想:梳排序是在冒泡排序上再做优化的。梳排序是待排序列通过增量分为若干个子序列,然后对子序列进行冒泡排序,然后一步步减少增量,直到增量减到1为止。梳排序的最后一次排序是冒泡排序。
梳排序的增量是根据递减率减小的,递减率的设定影响着梳排序的效率,最有效的递减率为1.3。
j = n, s = 1.3, flag = false;
while j > 0 or flag = true do
i = 0; j = max{(j / s), 1}; flag = false;
while i + j <= n do
if a[i] > a[i + j] then
交换a[i]和a[i + j];
flag = true;
end if
end while
end while
c语言:
#include <stdio.h>
void combSort(int num[],int n)
{
int incre = n;
int i;
while(incre >= 1)
{
incre /= 1.3;
i = 0;
while(i + incre < n)
{
if(num[i] > num[i + incre])
{
int t = num[i];
num[i] = num[i + incre];
num[i + incre] = t;
}
i++;
}
}
}
int main(void)
{
int n, i, j;
scanf("%d",n);
int num[5];
for(i = 0;i < n;i++)
{
scanf("%d",num[i]);
}
combSort(num,n);
for(i = 0;i < n;i++)
{
printf("%d ",num[i]);
}
}
java:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int []num = new int[n];
for(int i = 0;i < n;i++)
{
num[i] = in.nextInt();
}
combSort(num,n);
for(int i = 0;i < n;i++)
{
System.out.print(num[i] + " ");
}
}
public static void combSort(int []num,int n)
{
int incre = n;
while(incre >= 1)
{
int i = 0;
incre /= 1.3;
while(i + incre < n)
{
if(num[i] > num[i + incre])
{
int t = num[i];
num[i] = num[i + incre];
num[i + incre] = t;
}
i++;
}
}
}
}