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#include <iostream>
#include <string>
using namespace std;
struct Node
{
string name;
double gpa;
Node *link;
};
typedef Node* NodePtr;
void addToFront(NodePtr& head, string s, double num);
void printList(NodePtr head);
void addAfter(NodePtr afterMe, string s, double num);
void removeAfter(NodePtr afterMe);
NodePtr findMax(NodePtr head);
int main()
{
Node *head = NULL;
string name;
double gpa = 0;
addToFront(head, name, gpa);
name = "James";
gpa = 3.5;
addToFront(head, name, gpa);
name = "John";
gpa = 3;
addToFront(head, name, gpa);
name = "Peter";
gpa = 3.8;
addToFront(head, name, gpa);
name = "Mark";
gpa = 2.9;
addToFront(head, name, gpa);
//by using addToFront function, build the following linked list
//HEAD--> (Mark, 2.9) --> (Peter, 3.8) --> (John, 3.0) --> (James, 3.5) -->NULL
cout << "The original linked list has: \n";
printList(head);
name = "Sam";
gpa = 3.7;
NodePtr temp1 = head->link->link;
addAfter(temp1, name, gpa);
cout << "After inserting node Sam: \n";
printList(head);
NodePtr temp2 = head;
removeAfter(temp2);
//Insert a node(Sam, 3.7) between John and James. Display list to confirm it.
cout << "After removing node Peter: \n";
printList(head);
removeAfter(head);
//Delete Peter node, and display list to confirm it.
NodePtr max = findMax(head);
cout << "The max gpa: \n" << max->name << " & " << max->gpa << endl;
return 0;
}
void printList(NodePtr head)
{
for (Node *n = head; n != NULL; n = n->link)
{
cout << n->name << " & " << n->gpa << " --> ";
if (n->link == NULL)
cout << "NULL\n\n";
}
}
void addAfter(NodePtr afterMe, string s, double num)
{
Node * temp = new Node;
temp->name = s;
temp->gpa = num;
temp->link = afterMe->link;
afterMe->link = temp;
}
void addToFront(NodePtr& head, string s, double num)
{
Node* temp = new Node;
temp->name = s;
temp->gpa = num;
temp->link = head;
head = temp;
}
void removeAfter(NodePtr afterMe)
{
Node * temp = afterMe->link;
afterMe->link = temp->link;
delete temp;
}
NodePtr findMax(NodePtr head)
{
NodePtr max;
double maxGPA = 0;
max = NULL;
for (Node *n = head; n != NULL; n = n->link)
{
if (n->gpa > maxGPA)
{
maxGPA = n->gpa;
max = n;
}
}
return max;
}
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