Scala List splitAt() 方法与示例

splitAt()方法属于List类的值成员。它用于将给定列表拆分为指定位置的前缀/后缀对。

Method Definition: def splitAt(n: Int): (List[A], List[A])

Where, n is the position at which we need to split.

Return Type: It returns a pair of lists consisting of the first n elements of this list, and the other elements.

示例 #1：

// Scala program of splitAt()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a List 
        val list = List("a", "b", "c", "d", "e", "f")
          
        // Applying splitAt method 
        val result = list.splitAt(3)
          
        // Displays output
        println(result)
      
    }
}

输出：

(List(a, b, c), List(d, e, f))

示例 #2：

// Scala program of splitAt()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a List 
        val list = List(1, 2, 3, 4, 5, 6, 7)
          
        // Applying splitAt method 
        val result = list.splitAt(4)
          
        // Displays output
        println(result)
      
    }
}

输出：

(List(1, 2, 3, 4), List(5, 6, 7))