Scala TreeSet find()用法及代碼示例

在 Scala TreeSet class，則find()方法用於返回滿足TreeSet中給定謂詞的元素。

函數定義: def find(p: (A) => Boolean): Option[A]

返回類型: It returns the first element that satisfies a given predicate if present or else it returns None.

範例1：

// Scala program of find()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// 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 find() method   
        val result = t1.find(x => {x % 7 == 0}) 
          
        // Displays output  
        println("Element divisible by 7: " + result) 
          
    }  
}

輸出：

TreeSet(2, 4, 6, 7, 8, 9)
Element divisible by 7: Some(7)

範例2：

// Scala program of find()  
// method  
  
// Import TreeSet 
import scala.collection.mutable._
  
// 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 find() method   
        val result = t1.find(x => {x % 10 == 0}) 
          
        // Displays output  
        println("Element divisible by 10: " + result) 
          
    }  
}

輸出：

TreeSet(2, 4, 6, 7, 8, 9)
Element divisible by 10: None

相關用法

注：本文由純淨天空篩選整理自rupesh_rao大神的英文原創作品 Scala TreeSet find() 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。