
Sorting Algorithm

This is a sorting algorithm.   It may be applied to a set of data in order to sort it.    
For comparing various sorts, see compare sorts.  
For other sorting algorithms,   see sorting algorithms,   or:

O(n logn) sorts
Heap sort |
Merge sort |
Patience sort |
Quick sort
O(n log2n) sorts
Shell Sort
O(n2) sorts
Bubble sort |
Cocktail sort |
Cocktail sort with shifting bounds |
Comb sort |
Cycle sort |
Gnome sort |
Insertion sort |
Selection sort |
Strand sort
other sorts
Bead sort |
Bogo sort |
Common sorted list |
Composite structures sort |
Custom comparator sort |
Counting sort |
Disjoint sublist sort |
External sort |
Jort sort |
Lexicographical sort |
Natural sorting |
Order by pair comparisons |
Order disjoint list items |
Order two numerical lists |
Object identifier (OID) sort |
Pancake sort |
Quickselect |
Permutation sort |
Radix sort |
Ranking methods |
Remove duplicate elements |
Sleep sort |
Stooge sort |
[Sort letters of a string] |
Three variable sort |
Topological sort |
Tree sort


Task

Sort an array (or list) of strings in order of descending length, and in ascending lexicographic order for strings of equal length.

Use a sorting facility provided by the language/library, combined with your own callback comparison function.


Note:   Lexicographic order is case-insensitive.




 
(import (scheme char))
 
(define (comp a b)
   (let ((la (string-length a))
         (lb (string-length b)))
      (or
         (> la lb)
         (and (= la lb) (string-ci<? a b)))))
 
(print
   (sort comp '(
      "lorem" "ipsum" "dolor" "sit" "amet" "consectetur"
      "adipiscing" "elit" "maecenas" "varius" "sapien"
      "vel" "purus" "hendrerit" "vehicula" "integer"
      "hendrerit" "viverra" "turpis" "ac" "sagittis"
      "arcu" "pharetra" "id")))
 