【导读】本文介绍了C#的四种排序算法:冒泡排序、选择排序、插入排序和希尔排序 冒泡排序using System;namespace BubbleSorter { public class BubbleSorter { public void Sort(int [] list) { int i,j,temp; bool done=false; j=1; while((j<list.Length)&&(!done)) { done=true; for(i=0;i<list.Length-j;i++) { if(list[i]>list[i+1]) { done=false; temp=list[i]; list[i]=list[i+1]; list[i+1]=temp; } } j++; } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,5,13,6,10,55,99,2,87,12,34,75,33,47}; BubbleSorter sh=new BubbleSorter(); sh.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0} ",iArrary[m]); Console.WriteLine(); } } }
选择排序 using System;
namespace SelectionSorter { public class SelectionSorter { private int min; public void Sort(int [] list) { for(int i=0;i<list.Length-1;i++) { min=i; for(int j=i+1;j<list.Length;j++) { if(list[j]<list[min]) min=j; } int t=list[min]; list[min]=list[i]; list[i]=t; } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,5,3,6,10,55,9,2,87,12,34,75,33,47}; SelectionSorter ss=new SelectionSorter(); ss.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0} ",iArrary[m]); Console.WriteLine(); } } }
插入排序 using System;namespace InsertionSorter { public class InsertionSorter { public void Sort(int [] list) { for(int i=1;i<list.Length;i++) { int t=list[i]; int j=i; while((j>0)&&(list[j-1]>t)) { list[j]=list[j-1]; --j; } list[j]=t; } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,13,3,6,10,55,98,2,87,12,34,75,33,47}; InsertionSorter ii=new InsertionSorter(); ii.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0}",iArrary[m]); Console.WriteLine(); } } }
希尔排序 希尔排序是将组分段,进行插入排序. using System; namespace ShellSorter { public class ShellSorter { public void Sort(int [] list) { int inc; for(inc=1;inc<=list.Length/9;inc=3*inc+1); for(;inc>0;inc/=3) { for(int i=inc+1;i<=list.Length;i+=inc) { int t=list[i-1]; int j=i; while((j>inc)&&(list[j-inc-1]>t)) { list[j-1]=list[j-inc-1]; j-=inc; } list[j-1]=t; } } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,5,13,6,10,55,99,2,87,12,34,75,33,47}; ShellSorter sh=new ShellSorter(); sh.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0} ",iArrary[m]); Console.WriteLine(); } } }
http://www.uml.org.cn/net/200603242.htm
选择排序 using System;
namespace SelectionSorter { public class SelectionSorter { private int min; public void Sort(int [] list) { for(int i=0;i<list.Length-1;i++) { min=i; for(int j=i+1;j<list.Length;j++) { if(list[j]<list[min]) min=j; } int t=list[min]; list[min]=list[i]; list[i]=t; } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,5,3,6,10,55,9,2,87,12,34,75,33,47}; SelectionSorter ss=new SelectionSorter(); ss.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0} ",iArrary[m]); Console.WriteLine(); } } }
插入排序 using System;namespace InsertionSorter { public class InsertionSorter { public void Sort(int [] list) { for(int i=1;i<list.Length;i++) { int t=list[i]; int j=i; while((j>0)&&(list[j-1]>t)) { list[j]=list[j-1]; --j; } list[j]=t; } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,13,3,6,10,55,98,2,87,12,34,75,33,47}; InsertionSorter ii=new InsertionSorter(); ii.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0}",iArrary[m]); Console.WriteLine(); } } }
希尔排序 希尔排序是将组分段,进行插入排序. using System; namespace ShellSorter { public class ShellSorter { public void Sort(int [] list) { int inc; for(inc=1;inc<=list.Length/9;inc=3*inc+1); for(;inc>0;inc/=3) { for(int i=inc+1;i<=list.Length;i+=inc) { int t=list[i-1]; int j=i; while((j>inc)&&(list[j-inc-1]>t)) { list[j-1]=list[j-inc-1]; j-=inc; } list[j-1]=t; } } } } public class MainClass { public static void Main() { int[] iArrary=new int[]{1,5,13,6,10,55,99,2,87,12,34,75,33,47}; ShellSorter sh=new ShellSorter(); sh.Sort(iArrary); for(int m=0;m<iArrary.Length;m++) Console.Write("{0} ",iArrary[m]); Console.WriteLine(); } } }
http://www.uml.org.cn/net/200603242.htm
shell排序好像有问题哦
bool done=false;
有什么作用,不用这个变量不可以吗?
using System;
namespace QuickSorter
{
public class QuickSorter
{
private void Swap(ref int l,ref int r)
{
int s;
s=l;
l=r;
r=s;
}
public void Sort(int [] list,int low,int high)
{
int pivot;
int l,r;
int mid;
if(high<=low)
return;
else if(high==low+1)
{
if(list[low]>list[high])
Swap(ref list[low],ref list[high]);
return;
}
mid=(low+high)>>1;
pivot=list[mid];
Swap(ref list[low],ref list[mid]);
l=low+1;
r=high;
do
{
while(l<=r&&list[l]<pivot)
l++;
while(list[r]>=pivot)
r--;
if(l<r)
Swap(ref list[l],ref list[r]);
}while(l<r);
list[low]=list[r];
list[r]=pivot;
if(low+1<r)
Sort(list,low,r-1);
if(r+1<high)
Sort(list,r+1,high);
}
}
public class MainClass
{
public static void Main()
{
int[] iArrary=new int[]{1,5,3,6,10,55,9,2,87,12,34,75,33,47};
QuickSorter q=new QuickSorter();
q.Sort(iArrary,0,13);
for(int m=0;m<=13;m++)
Console.WriteLine("{0}",iArrary[m]);
}
}
}