带有示例的 Scala Queue copyToArray() 方法
copyToArray()方法用于将队列的元素复制到数组中。
Method Definition: def copyToArray[B >: A](xs: Array[B], start: Int, len: Int): Int
Parameters:
xs: It denotes the array where elements are copied.
start: It denotes the starting index for the copy to takes place. Its default value is 0.
len: It denotes the number of elements to copy. Its default value is the length of the set.
Return Type: It returns the elements of the set to an array.
示例 #1：
// Scala program of copyToArray()
// method
// Import Queue
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a queue
val q1 = Queue(1, 2, 3)
// Creating an array
val arr: Array[Int] = Array(0, 0, 0, 0, 0)
// Applying copyToArray method
q1.copyToArray(arr)
// Displays output
for(elem <- arr)
println(elem)
}
}
输出：
1
2
3
0
0
示例 #2：
// Scala program of copyToArray()
// method
// Import Queue
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a queue
val q1 = Queue(1, 2, 3)
// Creating an array
val arr: Array[Int] = Array(0, 0, 0, 0, 0)
// Applying copyToArray method
q1.copyToArray(arr, 1, 2)
// Displays output
for(elem <- arr)
println(elem)
}
}
输出：
0
1
2
0
0