c++用单链表的方式实现删除成绩不合格的同学成绩

假设单链表的每个节点包含学生的姓名和成绩。

1. 遍历单链表，找到所有成绩不合格的节点。
2. 从单链表中删除这些节点。

代码实现：

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

def delete_unqualified(head):
    # 遍历单链表，找到所有成绩不合格的节点
    prev_node = None
    curr_node = head
    while curr_node is not None:
        if curr_node.score < 60:
            # 从单链表中删除这个节点
            if prev_node is None:
                head = curr_node.next
            else:
                prev_node.next = curr_node.next
        else:
            prev_node = curr_node
        curr_node = curr_node.next
    return head

# 测试代码
head = Node('Alice', 80)
node1 = Node('Bob', 90)
node2 = Node('Charlie', 55)
node3 = Node('David', 70)
node4 = Node('Eve', 40)

head.next = node1
node1.next = node2
node2.next = node3
node3.next = node4

head = delete_unqualified(head)

curr_node = head
while curr_node is not None:
    print(curr_node.name, curr_node.score)
    curr_node = curr_node.next

输出结果：

Alice 80
Bob 90
David 70