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CSharp入门.md
两根不均匀的香,烧完一根是1h,怎么用来计时15min呢? 思路:一根香从两头同时点燃烧完是30min,只需再对半即可,那么怎么对半呢?可以在第一根香两端同时点燃的时候也点燃第二根香的一端,这样,当第一根香烧完的时候第二根香还剩30min可以烧,这时候再 ...
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