约瑟夫环问题用顺序线性表和链式线性表解决代码
时间: 2024-09-12 14:01:14 浏览: 64
实验二 线性表的链式存储和实现
约瑟夫环问题是一个著名的数学问题,也称为约瑟夫斯问题(Josephus problem),描述的是有n个人围成一圈,从第k个人开始报数,每次报到m的人出列,然后从下一个人开始继续报数,直到所有人都出列为止。该问题可以用顺序线性表和链式线性表来解决。
以下是使用顺序线性表和链式线性表解决约瑟夫环问题的Python代码示例:
1. 使用顺序线性表(列表List)解决约瑟夫环问题:
```python
def josephus问题顺序线性表(n, k, m):
# 初始化列表,存放人员编号
people = list(range(1, n+1))
index = k - 1 # 开始位置索引
# 循环直到列表为空
while len(people) > 0:
# 报数m-1次后,当前索引位置的人出列
index = (index + m - 1) % len(people)
print(people.pop(index), end=' ')
print()
# 示例
josephus问题顺序线性表(10, 3, 3) # 10个人,从第3个人开始报数,每次报数到3
```
2. 使用链式线性表(链表LinkedList)解决约瑟夫环问题:
```python
class Node:
def __init__(self, value):
self.value = value
self.next = None
class LinkedList:
def __init__(self):
self.head = None
self.tail = None
def append(self, value):
new_node = Node(value)
if self.head is None:
self.head = new_node
self.tail = new_node
else:
self.tail.next = new_node
self.tail = new_node
def delete(self, value):
current = self.head
prev = None
while current is not None and current.value != value:
prev = current
current = current.next
if current is not None:
if prev is None:
self.head = current.next
else:
prev.next = current.next
if current == self.tail:
self.tail = prev
return current
def __str__(self):
values = []
current = self.head
while current is not None:
values.append(str(current.value))
current = current.next
return ' -> '.join(values)
def josephus问题链式线性表(n, k, m):
# 初始化链表,存放人员编号
people = LinkedList()
for i in range(1, n+1):
people.append(i)
index = k - 1 # 开始位置索引
# 循环直到链表为空
while people.head is not None:
# 报数m-1次后,当前索引位置的人出列
for _ in range(m - 1):
people.head = people.head.next
print(people.delete(people.head.value), end=' ')
print()
# 示例
josephus问题链式线性表(10, 3, 3) # 10个人,从第3个人开始报数,每次报数到3
```
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