String Sorting in Scheme

Question

I'm new to scheme. I'm wondering how to sort strings in scheme. Now I become to think that using [string=?][string?] will help me to compare contents of the list. However, I'm still struggling with sort it out, literally. Does anyone help me to implement this?

Answer 1

Most Scheme implementations have a builtin sort that can sort lists:

> (sort '("How" "to" "sort" "strings" "in" "Scheme") string<?)
'("How" "Scheme" "in" "sort" "strings" "to")

If your implementation complain that sort is an unbound identifier, then lookup sort in the documentation to see how to include it.

Note that the predicate string<? is a function that compares two strings. Using < instead you can sort lists of numbers.