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#!/usr/bin/perl -s
use v5.24;
use Test2::V0 '!float';
use PDL;
use PDL::Char;
our ($tests, $examples);
run_tests() if $tests || $examples; # does not return
die <<EOS unless @ARGV;
usage: $0 [-examples] [-tests] [WORD...]
-examples
run the examples from the challenge
-tests
run some tests
WORD...
list of words
EOS
### Input and Output
say count_unsorted(@ARGV);
### Implementation
# Compare each word with its sorted bytes, find any divergences and
# count the concerned words.
sub count_unsorted {
my $w = PDL::Char->new(@_);
which(($w <=> $w->qsort)->orover)->dim(0);
}
### Examples and tests
sub run_tests {
SKIP: {
skip "examples" unless $examples;
is count_unsorted('abc', 'xyz', 'tsu'), 1, 'example 1';
is count_unsorted('rat', 'cab', 'dad'), 3, 'example 2';
is count_unsorted('x', 'y', 'z'), 0, 'example 3';
}
SKIP: {
skip "tests" unless $tests;
}
done_testing;
exit;
}
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