# Scala Queue map() method with example

The map() method is utilized to build a new queue by applying a function to all elements of this queue.
Method Definition: def map[B](f: (A) => B): Queue[B] Return Type: It returns a new queue containing all the elements after applying the given function.
Example #1:
 `// Scala program of map()  ``// method  `` ` `// Import Queue   ``import` `scala.collection.mutable.``_`` ` `// Creating object  ``object` `GfG  ``{  `` ` `    ``// Main method  ``    ``def` `main(args``:``Array[String])  ``    ``{  ``     ` `        ``// Creating a queue  ``        ``val` `q``1` `=` `Queue(``1``, ``3``, ``2``, ``7``, ``6``, ``5``)  ``         ` `        ``// Print the queue ``        ``println(q``1``) ``         ` `        ``// Applying map method  ``        ``val` `result ``=` `q``1``.map(x ``=>` `x*x) ``         ` `        ``// Display output ``        ``print(``"New queue after squaring all elements: "` `+ result) ``         ` `    ``}  ``}  `

Output:
```Queue(1, 3, 2, 7, 6, 5)
New queue after squaring all elements: Queue(1, 9, 4, 49, 36, 25)
```
Example #2:
 `// Scala program of map()  ``// method  `` ` `// Import Queue   ``import` `scala.collection.mutable.``_`` ` `// Creating object  ``object` `GfG  ``{  `` ` `    ``// Main method  ``    ``def` `main(args``:``Array[String])  ``    ``{  ``     ` `        ``// Creating a queue  ``        ``val` `q``1` `=` `Queue(``1``, ``3``, ``2``, ``7``, ``6``, ``5``)  ``         ` `        ``// Print the queue ``        ``println(q``1``) ``         ` `        ``// Applying map method  ``        ``val` `result ``=` `q``1``.map(x ``=>` `x/``2``) ``         ` `        ``// Display output ``        ``print(``"New queue after dividing all elements by 2: "` `+ result) ``         ` `    ``}  ``}  `

Output:
```Queue(1, 3, 2, 7, 6, 5)
New queue after dividing all elements by 2: Queue(0, 1, 1, 3, 3, 2)
```

Previous
Next