Scala Iterator addString() method with a start, a separator and an end with example

The addString method utilized to append the elements of the Scala Iterator to a String Builder.This method is same as addString() method but here a start, a separator and an end is also included. 

Method Definition: def addString(b: mutable.StringBuilder, start: String, sep: String, end: String): mutable.StringBuilder
Where, sep is the separator stated.
Return Type: It returns the elements of the Iterator in the String Builder and a start, a separator and an end is also included here.

Example #1:

Scala

// Scala program of addString() method
// with a start, a separator and an
// end

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating a Iterator
        val m1 = Iterator(1, 3, 4, 8)

        // Applying addString method
        val result = m1.addString(new StringBuilder(), "=>", "|", ".")

        // Displays output
        println(result)
    }
}

Output:

=>1|3|4|8.

Example #2:

Scala

// Scala program of addString() method
// with a start, a separator and an
// end

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Creating a Iterator
        val m1 = Iterator(1, 3, 3, 8)

        // Applying addString method
        val result = m1.addString(new StringBuilder(), "=>", "|", ".")

        // Displays output
        println(result)
    }
}

Output:

=>1|3|3|8.

So, here the identical element is not removed like in maps.