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Scala List dropRight()用法及代碼示例


dropRight()方法用於查找列表中除最後n個元素以外的所有元素。

函數定義: def dropRight(n: Int): List[A]

返回類型: It returns all the elements of the list except the last n elements.



範例1:

// Scala program of dropRight() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a list 
        val m1 = List(1, 1, 3, 3, 3, 5, 4, 5, 2) 
          
        // Applying dropRight method 
        val res = m1.dropRight(3) 
          
        // Displays output 
        println(res) 
      
    } 
}
輸出:
List(1, 1, 3, 3, 3, 5)

範例2:

// Scala program of dropRight() 
// method 
  
// Creating object 
object GfG 
{  
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating a list 
        val m1 = List(1, 1, 3, 3, 3, 5, 4, 5, 2) 
          
        // Applying dropRight method 
        val res = m1.dropRight(10) 
          
        // Displays output 
        println(res) 
      
    } 
}
輸出:
List()


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注:本文由純淨天空篩選整理自nidhi1352singh大神的英文原創作品 Scala List dropRight() method with example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。