PROGRAM TO SWAP NODES IN LINEAR LINKED LIST
/*********************************************/ /*PROGRAM TO SWAP NODES IN LINEAR LINKED LIST*/ /*********************************************/
#include < stdio.h> #include < conio.h> #include < malloc.h> #include < process.h> #include < ctype.h>
struct linear_list { int info; struct linear_list *next; }*start,*newnode,*ptr,*ptr1,*pt2;
void main() { int item,loc,loc1,temp; int i,j; char ch; clrscr(); newnode=(struct linear_list*)malloc(sizeof(struct linear_list)); start=newnode; do { printf("\nEnter data: "); scanf("%d",&item); newnode->info=item; printf("\nDo you want to create another node:(y/n)"); fflush(stdin); scanf("%c",&ch); if(tolower(ch)=='y') { newnode->next=(struct linear_list*)malloc(sizeof(struct linear_list)); newnode=newnode->next; } else { newnode->next=NULL; } }while(tolower(ch)!='n');
printf(“\n Linked List is:\n”); ptr=start; i=1; while(ptr!=NULL) { printf("\nNode %d : %d",i,ptr->info); ptr=ptr->next; i++; }
printf("\nEnter the locations of nodes whose values are tobe swapped:\n"); printf("\nLocation 1: "); scanf("%d",&loc); printf("\nLocation 2: "); scanf("%d",&loc1); ptr1=start; ptr2=start; j=1; while(j!=loc1) { ptr1=ptr1->next; j=j+1; } j=1; while(j!=loc2) { ptr2=ptr2->next; j=j+1; } temp=ptr1->info; ptr1->info=ptr2->info; ptr2->info=temp; printf(“\n After Swapping Linked List is:\n”); ptr=start; i=1; while(ptr!=NULL) { printf("\nNode %d : %d",i,ptr->info); ptr=ptr->next; i++; }
getch(); }
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Contributed by:
Rohit kakria
I am software developer
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