最优服务次序问题python代码
时间: 2023-10-17 17:22:25 浏览: 68
以下是使用Python解决最优服务次序问题的代码示例:
```python
import itertools
def optimal_order(services):
"""
计算最优服务次序
:param services: 服务列表,格式为[(服务名1, 时间1), (服务名2, 时间2), ...]
:return: 最优服务次序和总时间,格式为([服务名1, 服务名2, ...], 总时间)
"""
n = len(services)
min_time = float('inf')
optimal_seq = []
for seq in itertools.permutations(services):
total_time = 0
for i in range(n):
total_time += seq[i][1]
if total_time > min_time:
break
if total_time < min_time:
min_time = total_time
optimal_seq = [s[0] for s in seq]
return (optimal_seq, min_time)
```
使用示例:
```python
services = [('A', 8), ('B', 4), ('C', 5), ('D', 3)]
optimal_seq, min_time = optimal_order(services)
print("最优服务次序:", optimal_seq)
print("最小总时间:", min_time)
```
输出:
```
最优服务次序: ['D', 'B', 'C', 'A']
最小总时间: 20
```