void findNSmallest2(T first, T last, size_t n, V oit) {
std::auto_ptr<ListNode> head;
std::vector<double> buffer(n, std::numeric_limits<double>::max());
for (; first != last; ++first) {
double tmp = *first;
if (head.get() == NULL) {
head.reset(new ListNode(tmp));
}
else {
// Insertion into correct place
ListNode* currNode = head.get();
ListNode* prevNode = NULL;
for (;;) {
if (tmp < currNode->value()) {
// Insert
if (prevNode == NULL) {
// Inserts at start
head.release();
head.reset(new ListNode(tmp, currNode));
}
else {
// Insert part way through
ListNode* newnode = new ListNode(tmp, currNode);
prevNode->join(newnode);
}
break;
}
if (currNode->next() == NULL) {
// Reached end of list
ListNode* newnode = new ListNode(tmp);
currNode->join(newnode);
break;
} else {
prevNode = currNode;
currNode = currNode->next();
}
}
}
// Trim list to size
ListNode* currNode = head.get();
for (size_t i = 0; currNode != NULL && i < n; ++i) {
if (i == n - 1) {
ListNode* tmp = currNode->next();
currNode->join(NULL);
delete tmp;
}
currNode = currNode->next();
}
}
for (ListNode* currNode = head.get(); currNode != NULL;
currNode = currNode->next()) {
*oit = currNode->value();
}
}
void PointerFIFO::put(void* val)
{
ListNode *node = allocate();
node->data(val);
node->next(NULL);
if (mTail!=NULL) mTail->next(node);
mTail=node;
if (mHead==NULL) mHead=node;
mSize++;
}
void PointerFIFO::push_front(void* val) // by pat
{
// Pat added this routine for completeness, but never used or tested.
// The first person to use this routine should remove this assert.
ListNode *node = allocate();
node->data(val);
node->next(mHead);
mHead = node;
if (!mTail) mTail=node;
mSize++;
}
/* Return the +index+ numbered element from the beginning. */
Object* List::locate(STATE, size_t index) {
ListNode* cur = first_;
while(index > 0) {
if(cur->nil_p()) return Qnil;
cur = cur->next();
index--;
}
if(cur->nil_p()) return Qnil;
return cur->object();
}
/* Search the List for +obj+ and remove all instances of it.
*
* Returns the number of elements removed. */
size_t List::remove(STATE, const Object* obj) {
if(empty_p()) return 0;
size_t deleted = 0, counted = 0;
ListNode* node = first_;
ListNode* lst = nil<ListNode>();
ListNode* nxt = nil<ListNode>();
while(!node->nil_p()) {
nxt = node->next();
if(node->object() == obj) {
deleted++;
if(lst->nil_p()) {
first(state, nxt);
} else {
lst->next(state, nxt);
}
if(last_ == node) {
last(state, lst);
}
lst = nil<ListNode>();
} else {
counted++;
lst = node;
}
node = nxt;
}
count(state, Integer::from(state, counted));
return deleted;
}