No they don't. The basic data structures in Racket are listed here, https://docs.racket-lang.org/reference/data.html . There are also specific array implementations in modules, like the generic array interface in the array module or arrays for math in a math module.
Recursing over a list is a way to learn how to implement for, while and friends. If you know this technique understanding for is just understanding a subset of what you are already familiar with. It can be used to iterate over an arrays as well as lists, e.g. with ranges: https://docs.racket-lang.org/reference/pairs.html#%28def._%2...
Racket can also be used to teach object oriented programming and programming with structs, if the aim is to teach patterns used in C-like languages generally it's not a bad fit. Well, except advanced stuff like pointer witchery. Though you could probably implement a teaching language that does it with arrays or the byte code directly if you wanted to. It might be a good way to improve on error messages for pedagogical purposes.
Recursing over a list is a way to learn how to implement for, while and friends. If you know this technique understanding for is just understanding a subset of what you are already familiar with. It can be used to iterate over an arrays as well as lists, e.g. with ranges: https://docs.racket-lang.org/reference/pairs.html#%28def._%2...
Racket can also be used to teach object oriented programming and programming with structs, if the aim is to teach patterns used in C-like languages generally it's not a bad fit. Well, except advanced stuff like pointer witchery. Though you could probably implement a teaching language that does it with arrays or the byte code directly if you wanted to. It might be a good way to improve on error messages for pedagogical purposes.