private static MyLinkList <item> newPolynomial()
{
MyLinkList <item> polynomial = new MyLinkList <item>(); //实例化一个单链表
string str = Console.ReadLine();
str = str.Trim();
string[] nums = str.Split(new string[] { " " }, StringSplitOptions.None);
int n = Convert.ToInt32(nums[0]) * 2 + 1;
if (Convert.ToInt32(nums[0]) == 0)
{
return(null);
}
int[] input = new int[n];
int j = 0;
for (int i = 0; i <= nums.Length - 1; i++)
{
if (nums[i] != "")
{
input[j] = Convert.ToInt32(nums[i]);
j++;
}
}
for (int i = 1; i <= input[0]; i++)
{
item a = new item();
a.coef = input[2 * i - 1];
a.expo = input[2 * i];
polynomial.Append(a);
}
return(polynomial);
}
static MyLinkList <item> Mult(MyLinkList <item> P1, MyLinkList <item> P2)
{
Node <item> t1, t2;
MyLinkList <item> newP = new MyLinkList <item>();
t1 = P1.Head;
t2 = P2.Head;
while (t1 != null)
{
MyLinkList <item> tempP = new MyLinkList <item>();
while (t2 != null)
{
item temp = new item
{
coef = t1.Data.coef * t2.Data.coef,
expo = t1.Data.expo + t2.Data.expo
};
tempP.Append(temp);
t2 = t2.Next;
}
newP = Add(newP, tempP);
t1 = t1.Next;
t2 = P2.Head;
}
return(newP);
}
static MyLinkList <item> Add(MyLinkList <item> P1, MyLinkList <item> P2)
{
Node <item> t1, t2;
MyLinkList <item> newP = new MyLinkList <item>();
t1 = P1.Head;
t2 = P2.Head;
while (t1 != null && t2 != null)
{
if (t1.Data.expo == t2.Data.expo)
{
item temp = new item
{
coef = t1.Data.coef + t2.Data.coef,
expo = t1.Data.expo
};
if (temp.coef != 0)
{
newP.Append(temp);
}
t1 = t1.Next;
t2 = t2.Next;
}
else if (t1.Data.expo > t2.Data.expo)
{
item temp = new item
{
coef = t1.Data.coef,
expo = t1.Data.expo
};
newP.Append(temp);
t1 = t1.Next;
}
else if (t1.Data.expo < t2.Data.expo)
{
item temp = new item();
temp.coef = t2.Data.coef;
temp.expo = t2.Data.expo;
newP.Append(temp);
t2 = t2.Next;
}
}
while (t1 != null)
{
item temp = new item
{
coef = t1.Data.coef,
expo = t1.Data.expo
};
newP.Append(temp);
t1 = t1.Next;
}
while (t2 != null)
{
item temp = new item();
temp.coef = t2.Data.coef;
temp.expo = t2.Data.expo;
newP.Append(temp);
t2 = t2.Next;
}
return(newP);
}