Stateful transforms are simple objects with member functions that maintain state across calls:
// 2. 通用场景: 快速排序（注意随机化避免最坏情况）
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Nasa plans first crewed Moon mission in 50 years for February 2026
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Цены на нефть взлетели до максимума за полгода
· 杨勇 · 来源：cache资讯