Actually in some cases you don't need to know "X", if you are doing SQL, for example, or Prolog. Sorting is done by the tool, you do need to know relational algebra in case of SQL, or propositional logic and unification in case of Prolog.
I'll all depend on the context of what's being done, of course.
But sorting is a basic thing a programmer need to know (at least how to use it), its together with things like conditionals and looping/recursion.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Actually in some cases you don't need to know "X", if you are doing SQL, for example, or Prolog. Sorting is done by the tool, you do need to know relational algebra in case of SQL, or propositional logic and unification in case of Prolog.
I'll all depend on the context of what's being done, of course.
But sorting is a basic thing a programmer need to know (at least how to use it), its together with things like conditionals and looping/recursion.