Description
Write a function to add two polynomials. Do not destroy the input. Use a linked list implementation with a dummy head node. Note: The zero polynomial is represented by an empty list with only the dummy head node.
Format of functions:
Polynomial Add( Polynomial a, Polynomial b );
where Polynomial is defined as the following:
typedef struct Node *PtrToNode;
struct Node {
int Coefficient;
int Exponent;
PtrToNode Next;
};
typedef PtrToNode Polynomial;
/* Nodes are sorted in decreasing order of exponents.*/
The function Add is supposed to return a polynomial which is the sum of a and b.
Sample program of judge:
#include
#include
typedef struct Node *PtrToNode;
struct Node {
int Coefficient;
int Exponent;
PtrToNode Next;
};
typedef PtrToNode Polynomial;
Polynomial Read(); /* details omitted */
void Print( Polynomial p ); /* details omitted */
Polynomial Add( Polynomial a, Polynomial b );
int main()
{
Polynomial a, b, s;
a = Read();
b = Read();
s = Add(a, b);
Print(s);
return 0;
}
/* Your function will be put here */
Input
Polynomial is defined as the following:
typedef struct Node *PtrToNode;
struct Node {
int Coefficient;
int Exponent;
PtrToNode Next;
};
typedef PtrToNode Polynomial;
/* Nodes are sorted in decreasing order of exponents.*/
Output
The function Add is supposed to return a polynomial which is the sum of a and b.
4
3 4 -5 2 6 1 -2 0
3
5 20 -7 4 3 1