insertnodeattail

sample.cpp

/*
 * For your reference:
 *
 * SinglyLinkedListNode {
 *     int data;
 *     SinglyLinkedListNode* next;
 * };
 *
 */
SinglyLinkedListNode* insertNodeAtTail(SinglyLinkedListNode* head, int data) {
    SinglyLinkedListNode* tail = new SinglyLinkedListNode(data);
    if (head == nullptr){
        return tail;
    } else {
        SinglyLinkedListNode* tmp = head;
        while(tmp->next != nullptr){
            tmp = tmp->next;
        }
        tmp->next = tail;
    }
    return head;
}