Scala Stack sum() 方法与示例

在 Scala Stack class中， sum()方法用于返回堆栈中所有元素的总和。

Method Definition: def sum: A

Return Type: It returns the sum of all the elements of the stack.

示例 #1：

// Scala program of sum() 
// method 
  
// Import Stack 
import scala.collection.mutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating stack
        val s1 = Stack(1, 2, 3, 4, 5) 
          
        // Print the stack 
        println(s1) 
           
        // Applying sum method  
        val result = s1.sum
          
        // Display output 
        print("Sum of all elements: " + result) 
         
    } 
} 

输出：

Stack(1, 2, 3, 4, 5)
Sum of all elements: 15

示例 #2：

// Scala program of sum() 
// method 
  
// Import Stack 
import scala.collection.mutable._
  
// Creating object 
object GfG 
{ 
  
    // Main method 
    def main(args:Array[String]) 
    { 
      
        // Creating stack
        val s1 = Stack(5, 2, 13, 7, 1) 
          
        // Print the stack 
        println(s1) 
           
        // Applying sum method  
        val result = s1.sum
          
        // Display output 
        print("Sum of all elements: " + result) 
         
    } 
} 

输出：

Stack(5, 2, 13, 7, 1)
Sum of all elements: 28