[kzisme]

As an entry level developer - how does someone go about re-writing "x" in 100 lines of "x"?

Is there a certain process that goes into developing something like this, and why is this a popular thing to do? (writing an existing software in lesser lines)

[MoOmer]

1) Knowledge of the space is good, but can be learned while implementing. You'll need to know the language pretty well, in order to keep the line count down.

2) It's fun