## 问题 你想获得闭区间的两个数字中间的随机数。 ## 方法 用下面的方法 ~~~ randomInt = (lower, upper=0) -> start = Math.random() if not lower? [lower, upper] = [0, lower] if lower > upper [lower, upper] = [upper, lower] return Math.floor(start * (upper - lower + 1) + lower) (randomInt(1) for i in [0...10]) # => [0,1,1,0,0,0,1,1,1,0] (randomInt(1, 10) for i in [0...10]) # => [7,3,9,1,8,5,4,10,10,8] ~~~ ## 讨论 有问题吗？