swust oj 441
时间: 2023-08-29 22:10:57 浏览: 66
SWUST OJ 441 是什么?
SWUST OJ 441 可能是指西南科技大学在线评测系统(SWUST OJ),其中的问题编号为 441。但是,这个问题编号具体指的是哪个问题,我无法确定,因为在线评测系统的问题编号是动态分配的,而且不同的系统可能会有不同的编号分配方式。如果您能提供更多的上下文或信息,我可能会更好地回答这个问题。
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swustoj+1104
swustoj+1104是一个题目编号,具体的题目内容需要提供更多信息才能给出准确的回答。swustoj是一个在线编程评测系统,用于学生进行编程练习和比赛。每个题目都有一个唯一的编号,通过该编号可以找到对应的题目描述、输入输出样例和解题思路等信息。
如果你能提供更多关于swustoj+1104的信息,我可以帮你更详细地介绍这个题目。
swust oj431quick sort
Sure! The QuickSort algorithm is a common sorting algorithm used to sort arrays or lists efficiently. It follows the divide-and-conquer approach and has an average time complexity of O(n log n).
Here is a simple implementation of the QuickSort algorithm in Python:
```python
def quicksort(arr):
if len(arr) <= 1:
return arr
pivot = arr[len(arr) // 2]
left = [x for x in arr if x < pivot]
middle = [x for x in arr if x == pivot]
right = [x for x in arr if x > pivot]
return quicksort(left) + middle + quicksort(right)
# Example usage:
arr = [5, 2, 9, 1, 7, 6, 3]
sorted_arr = quicksort(arr)
print(sorted_arr)
```
This implementation selects a pivot element (in this case, the middle element), partitions the array into three sub-arrays (less than, equal to, and greater than the pivot), and recursively sorts each sub-array. Finally, it concatenates the sorted sub-arrays to obtain the sorted array.
Note that there are different variations of the QuickSort algorithm, such as choosing a random pivot or using a different partitioning scheme. This implementation represents a basic version.