There is the level of understanding of the concept of a Quicksort function, how it works, when to use it. And then there is the level of understanding gained o

There is the level of understanding of the concept of a Quicksort function, how it works, when to use it. And then there is the level of understanding gained of opening up an editor and trying to write a Quicksort function in Go or C++ or Python or whatever. I wouldn't consider the latter to be "laying bricks".