Scala set: Check if a set is empty or not

Scala Set Exercise-5 with Solution

Write a Scala program to check if a set is empty or not.

Sample Solution:

Scala Code:

object SetEmptyCheckExample {
  def main(args: Array[String]): Unit = {
    // Create a set
    // val nums = Set(1, 2, 3, 4)
       val nums = Set()
    //Check if the set is empty
    val isEmpty = nums.isEmpty

    // Print the result
    if (isEmpty) {
      println("Set is empty.")
    } else {
      println("Set is not empty.")
    }
  }
}

Sample Output:

Set is not empty.
Set is empty.

Explanation:

In the above exercise,

• First we create a set "nums" containing elements 1, 2, 3, and 4.
• To check if the set is empty, we use the isEmpty method provided by the Set class. The isEmpty method returns true if the set does not contain any elements, and false otherwise.
• We store the result of the "isEmpty" method in the isEmpty variable.
• Finally, we use an if-else statement to print whether the set is empty or not.

Scala Code Editor :

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