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Scala TreeSet +()用法及代碼示例


在 Scala 中TreeSet class, 這+()方法用於將元素添加到TreeSet,除非它已經存在。

函數定義: def +(elem: A): TreeSet[A]

返回類型: It returns a new TreeSet with an additional element unless the element is already present.

示例#1:


// Scala program of +()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSets 
        val t1 = TreeSet("a", "e", "i", "o")  
          
        // Print the TreeSets 
        println(t1)  
          
        // Applying +() method   
        val result = t1 + ("u") 
          
        // Display output  
        print("After adding an element: " + result)  
           
    }  
}  
輸出:
TreeSet(a, e, i, o)
After adding an element: TreeSet(a, e, i, o, u)

示例#2:


// Scala program of +()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating TreeSets 
        val t1 = TreeSet(2, 1, 5, 4, 1)  
          
        // Print the TreeSets 
        println(t1)  
          
        // Applying +() method   
        val result = t1 + (3) 
          
        // Display output  
        print("After adding an element: " + result)  
           
    }  
}  
輸出:
TreeSet(1, 2, 4, 5)
After adding an element: TreeSet(1, 2, 3, 4, 5)


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