Implement this program in scala:

A stream is like a list except that it is constructed using the lazy version of cons:

scala> val s1 = 1 #:: 2 #:: 3 #:: Stream.Empty

s1: scala.collection.immutable.Stream[Int] = Stream(1, ?) scala> s1.head res0: Int = 1 scala> s1.tail.head res1: Int = 2

Create the following streams

-An infinitely long stream of 1's

-The stream of all non-negative integers

-The stream of all non-negative even integers

-The stream of all squares of integers