Collections versus Streams

Reading up till here, you're probably thinking that all operations we performed in that program is possible with Collections itself in Kotlin, so why should we use Streams? To answer that, we should first learn the differences between Streams and Collections. So, let's have a look at the following list consisting of differences between Collections and Streams:

• As the definition of Collections says, a Collection is a data structure which stores and lets you work with a group of data. Streams, on the other hand, aren't data structures and don't store anything; they work like a pipeline or IO channel, which fetches data from its source on demand.
• Every data structure must have a finite size limit, and the same applies to Collections as well. But, as Streams are not data structures, they don't need to have any specific size limit.
• While accessing elements of a Collection directly, you can do it any time, even for the same position, without the requirement of recreating...