Question: I have a programming question in OCaml, 1) Using higher order functions, implement a function to do the following: Given (string * int) list =

I have a programming question in OCaml,

1) Using higher order functions, implement a function to do the following: Given

(string * int) list = [("BMW", 1); ("Chevy", 1); ("Chevy", 1); ("BMW", 1); ("Toyota", 1); ("Toyota", 1); ("Honda", 1); ("BMW", 1)]

how do I write a function to group the similar ones together to be

(string * int list) list = [("BMW", [1; 1; 1]); ("Honda", [1]); ("Toyota", [1; 1]); ("Chevy", [1; 1])]?

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