Scala 设置 copyToArray() 方法与示例
copyToArray()方法用于将集合的元素复制到数组。
Method Definition: def copyToArray(xs: Array[A], start: Int, len: Int): Unit
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 length of the set.
Return Type: It returns the elements of the set to an array.
示例 #1：
Scala
// Scala program of copyToArray()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating sets
val s1 = Set(1, 2, 3)
val arr: Array[Int] = Array(0, 0, 0, 0, 0)
// Applying copyToArray method
s1.copyToArray(arr)
// Displays output
for(elem <- arr)
println(elem)
}
}Scala
// Scala program of copyToArray()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating sets
val s1 = Set(1, 2, 3)
val arr: Array[Int] = Array(0, 0, 0, 0, 0)
// Applying copyToArray method
s1.copyToArray(arr, 1, 2)
// Displays output
for(elem <- arr)
println(elem)
}
}输出：
1
2
3
0
0示例 #2：
斯卡拉
// Scala program of copyToArray()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating sets
val s1 = Set(1, 2, 3)
val arr: Array[Int] = Array(0, 0, 0, 0, 0)
// Applying copyToArray method
s1.copyToArray(arr, 1, 2)
// Displays output
for(elem <- arr)
println(elem)
}
}
输出：
0
1
2
0
0