构造两个带有表头节点的有序单链表La 、Lb. 编写程序实现将La,Lb 合并成一个有序单链表Lc

好的，我可以为您提供代码，以下是实现的Python代码：

class Node:
    def __init__(self, data=None):
        self.data = data
        self.next = None

def merge_sorted_lists(la, lb):
    dummy_node = Node()
    tail = dummy_node

    while True:
        if la is None:
            tail.next = lb
            break
        if lb is None:
            tail.next = la
            break

        if la.data <= lb.data:
            tail.next = la
            la = la.next
        else:
            tail.next = lb
            lb = lb.next

        tail = tail.next

    return dummy_node.next

# Example usage:
la = Node()
la.next = Node(1)
la.next.next = Node(3)

lb = Node()
lb.next = Node(2)
lb.next.next = Node(4)

lc = merge_sorted_lists(la.next, lb.next)

while lc:
    print(lc.data)
    lc = lc.next

希望能够帮到您，如果您还有其他问题需要解答，请随时提出。