选择排序线程程序实现方法
时间: 2023-12-14 15:32:06 浏览: 32
以下是选择排序线程程序的实现方法:
```python
import threading
def selection_sort(arr):
n = len(arr)
for i in range(n):
min_idx = i
for j in range(i+1, n):
if arr[min_idx] > arr[j]:
min_idx = j
arr[i], arr[min_idx] = arr[min_idx], arr[i]
def threaded_selection_sort(arr, num_threads):
threads = []
length = len(arr)
chunk_size = length // num_threads
for i in range(num_threads):
start = i * chunk_size
end = (i+1) * chunk_size
if i == num_threads - 1:
end = length
thread = threading.Thread(target=selection_sort, args=(arr[start:end],))
threads.append(thread)
thread.start()
for thread in threads:
thread.join()
for i in range(1, num_threads):
start = i * chunk_size
end = (i+1) * chunk_size
if i == num_threads - 1:
end = length
j = start
while j > 0 and arr[j-1] > arr[j]:
arr[j-1], arr[j] = arr[j], arr[j-1]
j -= 1
return arr
```
该程序使用了Python的`threading`模块来实现多线程选择排序。`selection_sort`函数实现了选择排序算法,`threaded_selection_sort`函数则将数组分成多个块,每个块分配一个线程来进行选择排序。最后,将所有块合并并进行插入排序以获得最终排序结果。
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