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#!/usr/bin/perl -s
use v5.16;
use Test2::V0;
our ($tests, $examples);
run_tests() if $tests || $examples; # does not return
die <<EOS unless @ARGV;
usage: $0 [-examples] [-tests] [--] [N...]
-examples
run the examples from the challenge
-tests
run some tests
N...
list of numbers
EOS
### Input and Output
say "(@{[move_zero(@ARGV)]})";
### Implementation
sub move_zero {
my $cnt;
# Count and suppress zeroes, then append the suppressed zeroes.
((grep {$cnt += !$_; $_} @_), (0) x $cnt)
}
### Examples and tests
sub run_tests {
SKIP: {
skip "examples" unless $examples;
is [move_zero(1, 0, 3, 0, 0, 5)], [1, 3, 5, 0, 0, 0], 'example 1';
is [move_zero(1, 6, 4)], [1, 6, 4], 'example 2';
is [move_zero(0, 1, 0, 2, 0)], [1, 2, 0, 0, 0], 'example 3';
}
SKIP: {
skip "tests" unless $tests;
is [move_zero(0, 0, 0)], [0, 0, 0], 'zeroes only';
is [move_zero(1, 0, -1)], [1, -1, 0], 'negative';
}
done_testing;
exit;
}
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