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Added iterator function to LinkedList #68

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Added iterator function to LinkedList #68

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22 changes: 22 additions & 0 deletions LinkedList.h
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,12 @@ class LinkedList{
*/
virtual void clear();

/*
Iterates over the LinkedList;
Calls the callback function for each element;
*/
virtual void iterator(void (*iteratorCallback)(T &, T *_out), T *out);

/*
Sort the list, given a comparison function
*/
Expand Down Expand Up @@ -347,6 +353,22 @@ void LinkedList<T>::clear(){
shift();
}


template<typename T>
void LinkedList<T>::iterator(void (*iteratorCallback)(T &, T* _out), T *out){
ListNode<T>* current = root;

while(current){

// Post data to callback function
iteratorCallback(current->data, out);

current = current->next;
}

return NULL;
}

template<typename T>
void LinkedList<T>::sort(int (*cmp)(T &, T &)){
if(_size < 2) return; // trivial case;
Expand Down