Scala List size() 方法与示例

size()方法用于查找所述列表中的元素数。

Method Definition: def size(): Int

Return Type: It returns the number of elements in the stated list.

示例 #1：

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

输出：

5

示例 #2：

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

输出：

2