Scala Map: Find the size of a map

Scala Map Exercise-3 with Solution

Write a Scala program to create a map and find the size of the map.

Sample Solution:

Scala Code:

object MapSizeExample {
  def main(args: Array[String]): Unit = {
    // Create a map
    val color_map = Map("Red" -> 1, "Green" -> 2, "Blue" -> 3, "Orange" -> 4)
    // Print the map
    println("Map: " + color_map)

    // Find the size of the map
    val map_size = color_map.size

    // Print the size
    println("Size of the map: " + map_size)
  }
}

Sample Output:

Map: Map(Red -> 1, Green -> 2, Blue -> 3, Orange -> 4)
Size of the map: 4

Explanation:

In the above exercise -

• First we create a map "color_map" using the Map constructor and provide key-value pairs.
• To find the size of the map, we use the size method, which returns the number of key-value pairs in the map. We store the result in the "map_size" variable.
• Finally, we print the size using println.

Scala Code Editor :

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