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数组的非互斥概率选取。
直接用三个独立的[0,1]之间的均匀随机数（RandomCoin ），分别决定是否抽选P的三个元素就是了 随机数不大于P的某一元素时，即事件落在“应当抽中该元素”上，否则事件落在“不抽选该元素”上，于是改元素被抽中的概率就是它自身的数值。每个随机数都是彼...
3 years ago | 0
| accepted
