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Scala Product Map Values

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In Scala the product of the map elements can be done by utilizing foldLeft method.
Syntax: m1.foldLeft(1)(_*_._1) Here, m1 is used for a Map, foldLeft is a method that takes an initial value one for product. it will take previous result and multiply it to the next map key value. * and use 1 for the initial value to get the product of values. Return Type: It returns the product of all the elements of the map.
Example #1:
// Scala program of product()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map(3 -> "geeks", 2 -> "for", 4 -> "for")
          
        // Applying product method
        val result = m1.foldLeft(1)(_*_._1)
          
        // Displays output
        println(result)
      
    }
}

                    
Output:
24
Here, one in the foldLeft method is the initial value. Example #2:
// Scala program of product()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating a map
        val m1 = Map(3 -> "geeks", 4 -> "for", 4 -> "for")
          
        // Applying product method
        val result = m1.foldLeft(1)(_*_._1)
          
        // Displays output
        println(result)
      
    }
}

                    
Output:
12


Last Updated : 26 Jul, 2019
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