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void bubble_sort(item *node)
{
item *first_prev,*first,*second,*temp;
int i, j, n = 1;
bool sorted = false;
//make these 3 pointers point to the head of the list
temp = node;
first = node;
first_prev = node;
//count the number of nodes in the list
while (first->next != NULL)
{
n++;
first= first->next;
}
for (i = 1; i <= n; i++)
{
first = temp;
first_prev = temp;
second = first->next;
for (j=1; j<=(n-i); j++)
{
if (first->val > second->val)
{
if (first == temp)
{
first->next = second->next;
second->next = first;
temp = second;
first = second;
}
else
{
first->next = second->next;
second->next = first;
first_prev->next = second;
first = second;
}
}
first_prev = first;
first = first->next;
second = first->next;
}
}
sorted = true;
PrintList();
}
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void bubble_sort(item *node)
{
item *first_prev,*first,*second,*temp;
int i, j, n = 1;
bool sorted = false;
//make these 3 pointers point to the head of the list
temp = node;
first = node;
first_prev = node;
//count the number of nodes in the list
while (first->next != NULL)
{
n++;
first= first->next;
}
for (i = 1; i <= n; i++)
{
first = temp;
first_prev = temp;
second = first->next;
for (j=1; j<=(n-i); j++)
{
if (first->val > second->val)
{
if (first == temp)
{
first->next = second->next;
second->next = first;
temp = second;
first = second;
}
else
{
first->next = second->next;
second->next = first;
first_prev->next = second;
first = second;
}
}
first_prev = first;
first = first->next;
second = first->next;
}
}
sorted = true;
node = temp;
first = node;
//PrintList(node);
}
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
// Structure definition (template)
struct list_el
{
int val;
struct list_el *next;
};
typedef struct list_el item;
item *head = NULL;
void initialize(item*);
void InsertItem();
void DeleteItem();
void PrintList(item* head);
void FindItem();
//void SortList(item *head, int count);
//void bubble_sort(item *node);
item* bubble_sort(item *node);
//void sort(item *node);
//void swap(item *first, item *first_prev,item *second,item *second_prev);
void main()
{
int choice;
int count = 0;
item* root = new item;
do
{
printf("\n\tWELCOME TO ADVANCED PROGRAMMING\n");
printf("\n\tHere is a taste of working with Linked List in C\n\n");
printf("\n\t1. Insert an item \n");
printf("\n\t2. Delete a particular item\n");
printf("\n\t3. Print all the items\n");
printf("\n\t4. Find an item\n");
printf("\n\t5. Sort List\n");
printf("\n\t6. Quit \n");
printf("\n\n\tPlease enter your choice: ");
scanf("%d",&choice);
switch(choice)
{
case 1:
system("cls");
InsertItem();
break;
case 2:
DeleteItem();
break;
case 3:
PrintList(head);
break;
case 4:
FindItem();
break;
case 5:
//bubble_sort(head);
//sort(head);
root = bubble_sort( root );
PrintList(root);
break;
case 6:
exit(1);
break;
}
}while(choice != 6);
printf("\n\tThanks for using this program.\n");
getch();
}
void initialize(item *current)
{
printf("\n\tEnter a number: ");
scanf("%d", ¤t->val);
current->next = NULL;
}
void InsertItem()
{
item *newItem;
newItem =(item*)malloc(sizeof(item));
initialize(newItem);
if(head == NULL)
{
head = newItem;
}
else
{
item *current = head;
// Move to the end of the linked list
while(current->next != NULL)
{
current = current->next;
}
if(current->next == NULL)
{
newItem->next = current->next;
current->next = newItem;
}
}
//free(newItem);
}
void DeleteItem()
{
item* current = head;
int nodeNum;
item *newItem,*temp;
printf("\n\tEnter the item whose node you want deleted\n");
scanf("%d",&nodeNum);
newItem = current;
if(current->val == nodeNum)
{
// Deleting the first node
newItem = current;
current = current->next;
free(newItem);
head = current;
return;
}
else
{
// Deleting an other node
while(newItem->next->next != NULL)
{
if(newItem->next->val == nodeNum)
{
temp = newItem->next;
newItem->next = newItem->next->next;
free(temp);
head = current;
return;
}
newItem = newItem->next;
}
if(newItem->next->next == NULL && newItem->next->val == nodeNum)
{
// Check condition before deleting the last node
free(newItem->next);
newItem->next = NULL;
head = current;
return;
}
}
}
void PrintList(item* head)
{
item* current = head;
printf("\n\t");
while(current!=NULL)
{
printf("%d -->",current->val);
current = current->next;
}
printf("NULL");
}
void FindItem()
{
int NumberToSearch, node = 1;
bool Found = false;
item * current = head;
printf("\n\tEnter the value to search for in the list: ");
scanf("%d", &NumberToSearch);
while(current != NULL)
{
//if value is located in the first node
if (current ->val == NumberToSearch )
{
printf("\n\tValue %d found at node %d", NumberToSearch, node);
Found = true;
break;
}
else
{
current = current->next;
node++;
}
}
if (Found == false)
{
printf("\n\tValue %d not found.", NumberToSearch);
}
}
//void SortList(item *head, int count)
//{
// //item * head;
// int i, j/*, count*/;
// item *p1, *p2, *p3;
//
//
// for(i = 1; i < count; i++)
// {
// p1 = head;
// p2 = head->next;
// p3 = p2->next;
//
// for(j = 1; j <= (count - i); j++)
// {
// if(p2->val < p3->val)
// {
// p2->next = p3->next;
// p3->next = p2;
// p1->next = p3;
// p1 = p3;
// p3 = p2->next;
// }
// else
// {
// p1 = p2;
// p2 = p3;
// p3 = p3->next;
//
//
// }
// }
// }
//void bubble_sort(item *node)
item* bubble_sort(item *node)
{
item *first_prev,*first,*second,*temp;
int i, j, n = 1;
bool sorted = false;
//make these 3 pointers point to the head of the list
temp = node;
first = node;
first_prev = node;
//count the number of nodes in the list
while (first->next != NULL)
{
n++;
first= first->next;
}
for (i = 1; i <= n; i++)
{
first = temp;
first_prev = temp;
second = first->next;
for (j=1; j<=(n-i); j++)
{
if (first->val > second->val)
{
if (first == temp)
{
first->next = second->next;
second->next = first;
temp = second;
first = second;
}
else
{
first->next = second->next;
second->next = first;
first_prev->next = second;
first = second;
}
}
first_prev = first;
first = first->next;
second = first->next;
}
}
sorted = true;
node = temp;
first = node;
return first_prev;
//PrintList(node);
}
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