#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11145633
use warnings;
use List::AllUtils qw( nsort_by );

my @weekdays = qw/Monday Saturday Thursday/;

print "$_\n" for
  nsort_by { 'motuwethfrsasu' =~ substr lc, 0, 2; $-[0] } @weekdays;

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Outputs: 

Monday
Thursday
Saturday

[download]

In reply to Re: Challenge: sort weekdays in week-order (elegantly and efficiently) by tybalt89
in thread Challenge: sort weekdays in week-order (elegantly and efficiently) by bliako

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