Python编程代写服务

class QuickSort:
    """快速排序算法实现类"""
    
    @staticmethod
    def sort(arr: list) -> list:
        """
        快速排序主函数
        时间复杂度: O(n log n) 平均情况
        空间复杂度: O(log n)
        """
        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.sort(left) + 
                middle + 
                QuickSort.sort(right))

from flask import Flask, request, jsonify
from functools import wraps

app = Flask(__name__)

def validate_json(f):
    """JSON请求验证装饰器"""
    @wraps(f)
    def decorated_function(*args, **kwargs):
        if not request.is_json:
            return jsonify({
                'error': 'Content-Type must be application/json'
            }), 400
        return f(*args, **kwargs)
    return decorated_function

@app.route('/api/users', methods=['POST'])
@validate_json
def create_user():
    """创建用户API接口"""
    data = request.get_json()
    
    # 数据验证和处理逻辑
    return jsonify({'status': 'success'}), 201