/*Main function that reads in every transaction*/
void readTransactions(FILE* f, int numCustomers, int numTransactions){
HashRef h = createHashSet();
int custNum, wantPrint;
int count =0;
long bookId;
ListRef customers[numCustomers];
for(int i=0; i<numCustomers+1; i++)
customers[i] = newList();
while(count < numTransactions){
++count;
fscanf(f, "%d", &custNum);
fscanf(f, "%lu", &bookId);
fscanf(f, "%d", &wantPrint);
if(hasBook(customers[custNum],bookId)){ //customer already bought book
// checkPurchased(customers, custNum, bookId);
insertionSort(customers[custNum], bookId);
}
else{
addCopurchase(h, bookId, customers, custNum);
insertionSort(customers[custNum], bookId);
}
if(wantPrint){
printRecommendation(h, bookId, customers, custNum);
}
}
//debugHash(h);//uncomment me to see the hash status
destroy(h);
for(int i=0; i<numCustomers+1; i++){
makeEmpty(customers[i]);
freeList(customers[i]);
}
}
struct HashSet *resizeHashset(struct HashSet *hashset, int newSize)
{
struct HashSet *newHashSet;
struct ListNode *current;
int bucketNumber;
newHashSet = createHashSet(newSize, hashset->hashFunc);
for (bucketNumber = 0; bucketNumber < hashset->numberBuckets;
bucketNumber++) {
current = hashset->buckets[bucketNumber]->start;
while (current != NULL) {
addElementToHashset(newHashSet, current->word);
current = current->next;
}
}
deleteHashSet(hashset);
return newHashSet;
}