从链表中删除单个学生

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

def delete_student(head, student):
    # 处理空链表情况
    if head is None:
        return head

    # 处理头节点为要删除节点的情况
    if head.data == student:
        head = head.next
        return head

    # 遍历链表查找要删除的节点
    current = head
    while current.next is not None:
        if current.next.data == student:
            current.next = current.next.next
            return head
        current = current.next

    return head

# 创建链表
head = ListNode("Alice")
node1 = ListNode("Bob")
node2 = ListNode("Charlie")
head.next = node1
node1.next = node2

# 删除节点
head = delete_student(head, "Bob")

# 打印链表
current = head
while current is not None:
    print(current.data)
    current = current.next