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如何在scala中給出二維數組的隨機值如何在Scala中給出二維數組的隨機值?
如何在scala中給出二維數組的隨機值如何在Scala中給出二維數組的隨機值?
Array伴侶對象的fill方法使得這非常簡單。
scala> val random = new java.security.SecureRandom
random: java.security.SecureRandom = [email protected]
scala> def random2dArray(dim1: Int, dim2: Int, maxValue: Int) = Array.fill(dim1, dim2) { random.nextInt(maxValue) }
random2dArray: (dim1: Int,dim2: Int,maxValue: Int)Array[Array[Int]]
scala> random2dArray(3, 3, 100)
res0: Array[Array[Int]] = Array(Array(20, 80, 12), Array(99, 63, 82), Array(9, 76, 85))
什麼尺寸?隨機組件應該是什麼樣的? – jpalecek 2010-12-12 20:44:27