Scala immutable TreeSet dropRight()用法及代码示例

在Scala中一成不变TreeSet class，则使用dropRight()方法删除TreeSet的最后‘n’个元素。

Method Definition: def dropRight(n:Int):TreeSet[A]

Return Type: It returns a new TreeSet that consists of all the elements except the last ‘n’ elements.

范例1：

// Scala program of dropRight()  
// method  
  
// Import TreeSet 
import scala.collection.immutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSet 
        val t1 = TreeSet(2, 4, 6, 7, 8, 9)  
          
        // Print the TreeSet 
        println(t1)  
          
        // Applying dropRight() method   
        val result = t1.dropRight(2) 
          
        // Displays output  
        println("Queue after using dropRight(2) method:" + result) 
          
    }  
}

输出：

TreeSet(2, 4, 6, 7, 8, 9)
Queue after using dropRight(2) method:TreeSet(2, 4, 6, 7)

范例2：

// Scala program of dropRight()  
// method  
  
// Import TreeSet 
import scala.collection.immutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSet 
        val t1 = TreeSet(2, 4, 6, 7, 8, 9)  
          
        // Print the TreeSet 
        println(t1)  
          
        // Applying dropRight() method   
        val result = t1.dropRight(4) 
          
        // Displays output  
        println("Queue after using dropRight(4) method:" + result) 
          
    }  
}

输出：

TreeSet(2, 4, 6, 7, 8, 9)
Queue after using dropRight(4) method:TreeSet(2, 4)

相关用法

注：本文由纯净天空筛选整理自Shivam_k大神的英文原创作品 Scala immutable TreeSet dropRight() method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。