在 Scala - Spark 中同时生成两个不同的随机数
Generating two different random number simultaneously in Scala - Spark
谁能帮我在两个范围内生成两个不同的随机数?我试过:
var a = Random.nextInt(S)
var b = Random.nextInt(K)
if (a == S || b == K){
a = S-1
b = K-1
}
(word,a,b)
但这会生成一些不在指定范围内的数字。
def nextInt(n: Int): Int
Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.
根据方法契约,nextInt
将始终 return 一个从 0 到 n - 1
的值,因此您的条件 a == S || b == K
将始终为假。
谁能帮我在两个范围内生成两个不同的随机数?我试过:
var a = Random.nextInt(S)
var b = Random.nextInt(K)
if (a == S || b == K){
a = S-1
b = K-1
}
(word,a,b)
但这会生成一些不在指定范围内的数字。
def nextInt(n: Int): Int
Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.
根据方法契约,nextInt
将始终 return 一个从 0 到 n - 1
的值,因此您的条件 a == S || b == K
将始终为假。