Just curious, did you already know how to code when you took your data structures class? And I mean not just write some basic programs, but really know how to c

Just curious, did you already know how to code when you took your data structures class? And I mean not just write some basic programs, but really know how to code. I ask because data structures usually comes in the 2nd or 3rd semester of a CS curriculum, and for most CS students, they can't apply the proofs and theory because it obscures where it applies in the problem domain. They can't draw the line between the theory and practical application, unless they already have written a good bit of code. Maybe this doesn't apply to all CS students, but I would say the majority.