void SLTPrint(SLTNode* phead)
{
	SLTNode* cur = phead;
	while (cur)
	{
		printf("%d->", cur->data);
		cur = cur->next;
	}
	printf("NULL\n");
}

SLTNode* BuySListNode(SLTDataType x)
{
	SLTNode* newNode = (SLTNode*)malloc(sizeof(SLTNode));
	newNode->data = x;
	newNode->next = NULL;
	return newNode;
}