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Scala Stack foreach()用法及代码示例


在 Scala Stack class,则使用foreach()方法将给定函数应用于堆栈的所有元素。

函数定义: def foreach[U](f: (A) => U): Unit

返回类型: It returns all the elements of the stack after applying the given function to each of them.



范例1:

// Scala program of foreach()  
// 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)   
            
        // Applying foreach method to print the stack  
        print("Elements in the stack: ")  
        s1.foreach(x => print(x + " ")) 
    }  
} 
输出:
Elements in the stack: 6 2 3 4 5

范例2:

// Scala program of foreach()  
// 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 foreach method   
        s1.foreach(x => println(x + " times " + x +" = " + x*x))  
    }  
} 
输出:
Stack(6, 2, 3, 4, 5)
6 times 6 = 36
2 times 2 = 4
3 times 3 = 9
4 times 4 = 16
5 times 5 = 25


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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 foreach() 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。