数据结构创建一个顺序表,输入学号,删除学号第七位,再插入学号第七位
时间: 2024-09-06 19:02:11 浏览: 58
在创建一个顺序表数据结构时,通常会使用数组作为底层存储,来实现插入、删除操作。这里是一个简单的步骤说明:
1. **初始化顺序表**:首先创建一个固定大小的数组(比如`size`),用于存储学生的学号。
```python
class SequenceList:
def __init__(self, capacity):
self.data = [0] * capacity
self.length = 0
```
2. **添加学生(插入)**:当需要插入新学号到第7位时,首先要确保有足够的空间。如果已满,则需动态扩容。然后将新学号放置到适当位置。
```python
def insert(self, new_student):
if self.length == len(self.data):
self.resize()
old第七位 = self.data[self.length - 7]
for i in range(self.length - 6, -1, -1): # 从倒数第二个元素开始向左移动
self.data[i + 1] = self.data[i]
self.data[6] = new_student
self.length += 1
def resize(self):
new_capacity = self.capacity * 2 # 可能的扩容因子
new_data = [0] * new_capacity
for i in range(self.length):
new_data[i] = self.data[i]
self.data = new_data
self.capacity = new_capacity
```
3. **删除学生(删除)**:删除第七位的学生同样要考虑空间溢出的情况。从第六位开始向前填充,最后一位的数据会被覆盖。
```python
def delete(self, position):
if position >= 7 and position < self.length:
for i in range(position, self.length - 1):
self.data[i] = self.data[i + 1]
self.length -= 1
elif position == self.length: # 如果试图删除最后一个位置,不做处理,因为没有下一个位置可以填补
pass
```
4. **删除第七位**:调用 `delete(7)` 即可。
请注意,这个实现假设学号的长度固定,并且索引从0开始计数。实际应用中,可能需要更复杂的方式来处理不固定长度的学号以及边界条件。
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