当“辞家千里又千里”不可避免，流动固然带来短暂的离别，但也创造新的相遇。从前，年味藏在一家人置办年货的热闹里。如今，萍水相逢的朋友“把好吃的分享给你”，朴素情谊同样能传递浓浓暖意。“友谊牌”年货的走红，让我们看到年轻人对传统年俗的新阐释，更折射其历久弥新的生命力。对团圆的期盼、对美好的向往、对情感的珍视，年味的内核一直都在。
It may only be number crunching, but the love algorithm tells us that there are many viable partners, not just The One.
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Think about how you'd search a large room for a lost key. You wouldn't examine every square inch sequentially. You'd split the room into sections (by the couch, near the door, under the table) and rule out entire sections at a glance. "I didn't go near the kitchen, so skip that."，详情可参考51吃瓜
3. 对每个桶内排序（可用任意排序算法）
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