class Linear
{
int size;
int num;
int data[];
//申请空间,如果用户输入的空间大小小于等于0,则默认使用空间100
public Linear(int n)
{
if(n <= 0)
size = 100;
else
size = n;
data = new int[size];
num = 0;
}
//遍历所有的数据,并输出
public void Visit()
{
if(num == 0)
{
System.out.println("Visit:The array is empty!");
return;
}
for(int i = 0; i < num; i++)
System.out.print(data[i]+"\t");
System.out.println();
}
//插入一个数据
public void Insert(int pos,int x)
{
if(pos < 0 || pos > num)
{
System.out.println("Insert:The position is error!");
return;
}
if(num == size)
{
System.out.println("Insert:The array is full!");
return;
}
for(int i = num - 1; i >= pos; i--)
{
data[i+1] = data[i];
}
data[pos] = x;
num ++;
}
//删除一个数据
public void Delete(int pos)
{
if(pos < 0 || pos > (num - 1))
{
System.out.println("Delete:The position is error!");
return;
}
if(num == 0)
{
System.out.println("Delete:The array is empty!");
return;
}
for(int i = pos; i < (num - 1); i++)
data[i] = data[i+1];
num -- ;
}
//选择排序法,从小到大排列
public void SelectSort()
{
int k = 0,p = 0,t = 0;
for(int i = 0; i < num -1; i++)
{
t = data[i];
k = i;
p = i;
for(int j = i + 1; j < num; j++)
if(t > data[j])
{
t = data[j];
p = j;
}
if(k != p)
{
int temp = data[k];
data[k] = data[p];
data[p] = temp;
}
}
}
//插入排序法,从小到大
public void InserSort()
{
int i = 0,j = 0;
for(i = 0; i < num; i++)
{
int t = data[i];
for(j = i - 1; j >= 0; j --)
{
if(t < data[j])
data[j+1] = data[j];
else
break;
}
data[j+1] = t;
}
}
//冒泡排序
public void BubbleSort()
{
int t = 0;
for(int i = 0; i < num -1; i++)
for(int j = i+1; j < num; j++)
if(data[i] > data[j])
{
t = data[i];
data[i] = data[j];
data[j] = t;
}
}
//快速排序,因为要使用递归,因此必须定义一个额外的快排方法
private void qsort(int low,int high)
{
int i = 0, j = 0 ,t = 0;
if(low < high)
{
i = low;
j = high;
t = data[low];
while(i < j)
{
while((i < j) && (data[j] > t)) j--;
if(i < j)
data[i++] = data[j];
while((i < j) && (data[i] <= t)) i++;
if( i < j)
data[j--] = data[i];
}
data[i] = t;
qsort(low,j - 1);
qsort(j + 1,high);
}
}
public void QuickSort()
{
qsort(0,num - 1);
}
}
class Program
{
public static void main(String arg[])
{
//使用Linear线形结构
Linear line = new Linear(5);
//初始化若干数据,即插入5条数据
line.Insert(0,3);
line.Insert(1,7);
line.Insert(2,2);
line.Insert(3,5);
line.Insert(4,3);
//line.SelectSort();
//line.InserSort();
//line.BubbleSort();
line.QuickSort();
line.Visit();
}
}
posted on 2009-09-16 12:02
鹏凌 阅读(155)
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Java --j2ee