copying.cpp
This is from the practice midterm.
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#include <iostream>
using namespace std;
class LList{
private:
struct node{
int data;
node* next;
};
node* head = nullptr;
node* current = nullptr;
public:
LList(){
}
LList(int a){
push(a);
}
void push(int a){
if (head == nullptr){
head = new node{a, nullptr};
}
else {
head = new node{a, head};
}
}
void enqueue(int a){
node* tmp = nullptr;
if (head == nullptr){
head = new node{a, nullptr};
current = head;
}
else {
tmp = new node{a, nullptr};
current -> next = tmp;
current = current -> next;
}
}
void print(){
cout << "Linked List Elements: ";
for (node* i = head; i != nullptr; i = i -> next){
cout << i -> data << " ";
}
cout << endl;
}
void remove_all(){
for (node* i = head; i != nullptr; i = i -> next){
head = head -> next;
i -> next = nullptr;
delete i;
}
}
void copy(const LList& other){
remove_all();
for (node* i = other.head; i != nullptr; i = i -> next){
enqueue(i -> data);
}
}
};
int main(){
LList list1;
cout << "Push elements to Linked List " << endl;
list1.push(2);
list1.print();
list1.push(1);
list1.print();
list1.push(5);
list1.print();
LList list2;
cout << "Copy elements to Linked List " << endl;
list2.copy(list1);
list2.print();
return 0;
}
Console Output
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Push elements to Linked List
Linked List Elements: 2
Linked List Elements: 1 2
Linked List Elements: 5 1 2
Copy elements to Linked List
Linked List Elements: 5 1 2