School Commit Init

Anul 1/Semestrul 2/Data structures/Lab 3/ListIterator.cpp

@@ -0,0 +1,49 @@
+#include "ListIterator.h"
+#include "SortedIndexedList.h"
+#include <iostream>
+
+using namespace std;
+
+ListIterator::ListIterator(const SortedIndexedList& list) : list(list) {
+	// O(1)
+	this->_current = list._head;
+}
+
+void ListIterator::first(){
+	// O(1)
+	this->_current = this->list._head;
+}
+
+void ListIterator::next(){
+	// O(1)
+	if(!this->valid())
+		throw exception();
+	this->_current = this->list._next[this->_current];
+}
+
+bool ListIterator::valid() const{
+	// O(1)
+	if(this->_current != -1)
+		return true;
+	return false;
+}
+
+TComp ListIterator::getCurrent() const{
+	// O(1)
+	if(this->valid())
+		return this->list._elements[this->_current];
+	return NULL_TCOMP;
+}
+
+
+void ListIterator::previous(){
+	// O(1)
+	if(!this->valid())
+		throw exception();
+	this->_current = this->list._prev[this->_current];
+}
+
+void ListIterator::last(){
+	// O(1)
+	this->_current = this->list._tail;
+}