Clone a linked list with next and random pointer

/*  the node structure is as follows

struct Node {
    int data;
    Node *next;
    Node *arb;

    Node(int x) {
        data = x;
        next = NULL;
        arb = NULL;
    }
};
*/

// Should return the head of the copied linked list the
// output will be 1 if successfully copied
Node *copyList(Node *head) {
    Node *curr=head, *temp;
    
    while(curr){
        temp=curr->next;
        
        curr->next= new Node(curr->data);
        curr->next->next=temp;
        curr=temp;
    }
    
    curr=head;
    while(curr){
        if(curr->next)
            curr->next->arb=curr->arb? curr->arb->next:curr->arb;
        curr=curr->next? curr->next->next:curr->next;
    }
    
    Node *original=head, *copy=head->next;
    temp=copy;
    
    while(original && copy){
        original->next=original->next? original->next->next:original->next;
        copy->next=copy->next? copy->next->next:copy->next;
        original=original->next;
        copy=copy->next;
    }
    return temp;
}