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| #include <stdio.h>
#include <stdlib.h>
#define ERROR NULL
typedef int ElementType;
typedef struct LNode *PtrToLNode;
struct LNode {
ElementType Data;
PtrToLNode Next;
};
typedef PtrToLNode Position;
typedef PtrToLNode List;
Position Find( List L, ElementType X );
List Insert( List L, ElementType X, Position P );
List Delete( List L, Position P );
int main()
{
List L;
ElementType X;
Position P, tmp;
int N;
L = NULL;
scanf("%d", &N);
while ( N-- ) {
scanf("%d", &X);
L = Insert(L, X, L);
if ( L==ERROR ) printf("Wrong Answer\n");
}
scanf("%d", &N);
while ( N-- ) {
scanf("%d", &X);
P = Find(L, X);
if ( P == ERROR )
printf("Finding Error: %d is not in.\n", X);
else {
L = Delete(L, P);
printf("%d is found and deleted.\n", X);
if ( L==ERROR )
printf("Wrong Answer or Empty List.\n");
}
}
L = Insert(L, X, NULL);
if ( L==ERROR ) printf("Wrong Answer\n");
else
printf("%d is inserted as the last element.\n", X);
P = (Position)malloc(sizeof(struct LNode));
tmp = Insert(L, X, P);
if ( tmp!=ERROR ) printf("Wrong Answer\n");
tmp = Delete(L, P);
if ( tmp!=ERROR ) printf("Wrong Answer\n");
for ( P=L; P; P = P->Next ) printf("%d ", P->Data);
return 0;
}
Position Find( List L, ElementType X ){
while(L!=NULL){
if(L->Data == X){
return L;
}
L = L->Next;
}
return ERROR;
}
List Insert( List L, ElementType X, Position P ){
List head = L;
List p = (List)malloc(sizeof(List));
p->Data=X;
p->Next=NULL;
if(L==P){
p->Next=L;
return p;
}
while(L){
if(P==L->Next){
p->Next=L->Next;
L->Next=p;
return head;
}
L=L->Next;
}
printf("Wrong Position for Insertion\n");
return ERROR;
}
List Delete( List L, Position P ){
if(L==P){
L=L->Next;
return L;
}
List head = L;
while(L){
if(L->Next==P){
L->Next=P->Next;
return head;
}
L=L->Next;
}
printf("Wrong Position for Deletion\n");
return ERROR;
}
|
