public class List
{
private int count;
private int MAXSIZE = 10;
private int space [];
public List()
{
count = 0;
space = new int[MAXSIZE];
}
public boolean isEmpty()
{
return (count == 0);
}
public int getElement(int index)
{
if(index < 0 || index >= count)
return -1;
return space[index];
}
public int getSize()
{
return count;
}
public boolean equals(List l)
{
if(count != l.count) return false;
for(int i = 0; i < count; i++)
if(space[i] != l.space[i])
return false;
return true;
}
public String toString()
{
String str = "[";
for(int i = 0; i < count; i++)
str += " "+space[i];
return str+" ]";
}
public int getIndex(int element)
{
for(int i = 0; i < count; i++)
if(element == space[i])
return i;
return -1;
}
public boolean insert(int element, int index)
{
if(index < 0 || index > count)
return false;
if(count == MAXSIZE)
{
int [] space2 = new int[MAXSIZE*2];
for(int i = 0; i < count; i++)
space2[i] = space[i];
space = space2;
MAXSIZE *= 2;
}
if(index == count)
{
space[index] = element;
count++;
return true;
}
else
{
for(int i = count-1; i >= index; i--)
space[i+1] = space[i];
space[index] = element;
count++;
return true;
}
}
public boolean delete(int index)
{
if(index < 0 || index > count-1)
return false;
if(index == count -1)
{
count--;
return true;
}
for(int i = index+1; i <= count-1; i++)
space[i-1] = space[i];
count--;
return true;
}
}
import java.util.Random;
public class ListTest
{
public static void main(String args[])
{
Random r = new Random();
List l = new List();
for(int i = 0; i < 11; i++)
l.insert(r.nextInt(100), i);
System.out.println(l);
//insert
l.insert(100, 5);
System.out.println(l);
//delete
l.delete(10);
System.out.println(l);
}
}