Scala Map mkString() 方法与示例

mkString()方法用于将地图的元素表示为字符串。

Method Definition: def mkString: String

Return Type: It returns the elements of the map as a string.

示例 #1：

// Scala program of mkString()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating map
        val m1 = Map("geeks" -> 5, "for" -> 3, "cs" -> 6)
          
        // Applying mkString method 
        val result = m1.mkString
          
        // Displays output
        println(result)
    }
}

输出：

geeks -> 5for -> 3cs -> 6

示例 #2：

// Scala program of mkString()
// method
  
// Creating object
object GfG
{ 
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating map
        val m1 = Map("geeks" -> 5, "for" -> 3, "for" -> 3)
          
        // Applying mkString method 
        val result = m1.mkString
          
        // Displays output
        println(result)
    }
}

输出：

geeks -> 5for -> 3