Scala List lastIndexOf() method with example

The lastIndexOf() method is utilized to find the index of the last occurrence of the element present in this method as argument.

Method Definition: def lastIndexOf(elem: A, end: Int): Int

Return Type: It returns the index of the last occurrence of the element present in this method as argument.

Example #1:

// Scala program of lastIndexOf()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {
        // Creating a list
        val m1 = List(3, 6, 2, 9, 21, 9)

        // Applying lastIndexOf method
        val result = m1.lastIndexOf(9)

        // Displays output
        println(result)

    }
}

Output:

5

Example #2:

// Scala program of lastIndexOf()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {
        // Creating a list
        val m1 = List(3, 6, 2, 9, 3, 21, 3)

        // Applying lastIndexOf method
        val result = m1.lastIndexOf(3)

        // Displays output
        println(result)

    }
}

Output:

6