不要抓住你们老师的一个小小错误不放,人谁无过,过而改之,善莫大焉.以下是所有情况,0,1,2代表三种不同作物,下面是按照数字大小顺序排列的不重不少,很好检验.共48种.{0,1,0,1,0},{0,1,0,1,2},{0,1,0,2,0},{0,1,0,2,1},{0,1,2,0,1},{0,1,2,0,2},{0,1,2,1,0},{0,1,2,1,2},{0,2,0,1,0},{0,2,0,1,2},{0,2,0,2,0},{0,2,0,2,1},{0,2,1,0,1},{0,2,1,0,2},{0,2,1,2,0},{0,2,1,2,1},{1,0,1,0,1},{1...
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