LinearList/LoopSingleLinkList.c
Node* initList() {
    Node* L = (Node*)malloc(sizeof(Node));
    L->data = 0;
    L->next = L;
    return L;
}
/**
 * init a link list
 * @return the head pointer of link list's head
 */
init a link list
@return the head pointer of link list's head
init a link list @return the head pointer of link list ' s head
Node* initList() {
    Node* L = (Node*)malloc(sizeof(Node));
    L->data = 0;
    L->next = L;
    return L;
}
Node * initList ( ) { Node * L = ( Node * ) malloc ( sizeof ( Node ) ) ; L -> data = 0 ; L -> next = L ; return L ; }
init a link list
 @return the head pointer of link list's head
init a link list @return the head pointer of link list ' s head