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function quickSort(arr: number[]): number[] {
if (arr.length <= 1) return arr;
const pivot = arr[0];
const left = arr.slice(1).filter(x => x <= pivot);
const right = arr.slice(1).filter(x => x > pivot);
return [...quickSort(left), pivot, ...quickSort(right)];
}Skill-Level Adaptation
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// Example React component
function TodoList({ items }) {
const [todos, setTodos] = useState(items);
const [filter, setFilter] = useState('all');
const filteredTodos = todos.filter(todo => {
if (filter === 'active') return !todo.completed;
if (filter === 'completed') return todo.completed;
return true;
});
const toggleTodo = (id) => {
setTodos(todos.map(todo =>
todo.id === id
? { ...todo, completed: !todo.completed }
: todo
));
};
}Standard Explanation
This React component implements a TodoList with filtering capabilities: 1. State Management: - Uses useState to track todos and filter state - Maintains original items passed via props 2. Filtering Logic: - Implements three filter modes: all, active, completed - Uses array.filter() for efficient list filtering 3. Todo Toggle: - Implements immutable state updates - Uses map() to create new array with updated item Key Patterns: - Controlled component pattern - Immutable state updates - Functional programming concepts
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JavaScript/TypeScript
interface User {
id: string;
name: string;
role: 'admin' | 'user';
}
const getUser = async (id: string): Promise<User> => {
const response = await fetch(`/api/users/${id}`);
return response.json();
};- React & Next.js patterns
- Modern ES6+ features
- Type system analysis
- Framework-specific insights
Python
from typing import Optional
from fastapi import FastAPI
from pydantic import BaseModel
class Item(BaseModel):
name: str
price: float
is_offer: Optional[bool] = None
app = FastAPI()
@app.get("/items/{item_id}")
async def read_item(item_id: int):
return {"item_id": item_id}- Data science patterns
- Django & FastAPI
- Async/await usage
- Type hints analysis
Java
@Service
public class UserService {
private final UserRepository repository;
public UserService(UserRepository repository) {
this.repository = repository;
}
public Optional<User> findById(Long id) {
return repository.findById(id);
}
}- Spring Boot patterns
- Enterprise patterns
- Dependency injection
- OOP best practices
Go
type Service struct {
repo Repository
cache Cache
}
func (s *Service) GetUser(ctx context.Context, id string) (*User, error) {
if user, ok := s.cache.Get(id); ok {
return user, nil
}
return s.repo.FindUser(ctx, id)
}- Concurrency patterns
- Error handling
- Interface implementation
- Performance optimization
C++
template<typename T>
class SmartPtr {
T* ptr;
public:
SmartPtr(T* p = nullptr) : ptr(p) {}
~SmartPtr() { delete ptr; }
T& operator*() { return *ptr; }
T* operator->() { return ptr; }
};- Memory management
- STL usage patterns
- Template analysis
- Performance insights
Ruby
class User < ApplicationRecord
has_many :posts
validates :email, presence: true
def self.find_active
where(status: 'active')
.includes(:posts)
.order(created_at: :desc)
end
end- Rails patterns
- Metaprogramming
- DSL analysis
- Active Record usage
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