Scala List sum() 方法与示例

sum()方法用于添加所述列表的所有元素。

Method Definition: def sum(num: math.Numeric[B]): B

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

示例 #1：

// Scala program of sum()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a list
        val m1 = List(1, 2, 3, 4, 5, 7)
          
        // Applying sum method
        val result = m1.sum
          
        // Displays output
        println(result)
      
    }
}

输出：

22

示例 #2：

// Scala program of sum()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a list
        val m1 = List(1, 0)
          
        // Applying sum method
        val result = m1.sum
          
        // Displays output
        println(result)
      
    }
}

输出：

1