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Scala Stack forall()用法及代码示例


在 Scala Stack class,则forall()方法用于检查谓词是否对堆栈的所有元素都成立。

函数定义: def forall(p: (A) => Boolean): Boolean

返回类型: It returns true if the predicate holds true for all the elements of the stack or else returns false.



范例1:

// Scala program of forall()  
// method  
  
// Import Stack  
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating stack   
        val s1 = Stack(6, 2, 3, 4, 5)   
          
        // Print the stack 
        println(s1) 
            
        // Applying forall method   
        val result = s1.forall(x => {x % 7 == 0})  
          
        // Display output 
        println("All the elements are divisible by 7: " + result) 
    }  
} 
输出:
Stack(6, 2, 3, 4, 5)
All the elements are divisible by 7: false

范例2:

// Scala program of forall()  
// method  
  
// Import Stack  
import scala.collection.mutable._
  
// Creating object  
object GfG  
{  
  
    // Main method  
    def main(args:Array[String])  
    {  
      
        // Creating stack   
        val s1 = Stack(7, 9, 3, 1, 5)   
          
        // Print the stack 
        println(s1) 
            
        // Applying forall method   
        val result = s1.forall(x => {x % 2 == 1})  
          
        // Display output 
        println("All the elements are odd: " + result) 
    }  
} 
输出:
Stack(7, 9, 3, 1, 5)
All the elements are odd: true


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注:本文由纯净天空筛选整理自rupesh_rao大神的英文原创作品 Scala Stack forall() method with example。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。