Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

2026年2月3日 · 杨勇 · 来源：tutorial资讯

* 时间复杂度: O(nlogn) 空间复杂度: O(1) 稳定: ✗

Цены на нефть взлетели до максимума за полгода17:55

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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."

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