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#!/usr/bin/env perl
use v5.38;
sub smaller_than_n( $n, @ints ) {
scalar grep { $_ < $n } @ints;
}
sub smaller_than_current (@ints) {
my @result = map( { smaller_than_n( $_, @ints ) } @ints );
return \@result;
}
sub MAIN() {
if (@ARGV) {
#| Run on command line argument
say smaller_than_current(@ARGV);
}
else {
#| Run test cases
use Test2::V0 qw( is plan );
plan 4;
is smaller_than_current( 5, 2, 1, 6 ), [ 2, 1, 0, 3 ],
'works for (5, 2, 1, 6)';
is smaller_than_current( 1, 2, 0, 3 ), [ 1, 2, 0, 3 ],
'works for (1, 2, 0, 3)';
is smaller_than_current( 0, 1 ), [ 0, 1 ], 'works for (0, 1)';
is smaller_than_current( 9, 4, 9, 2 ), [ 2, 1, 2, 0 ],
'works for (9, 4, 9, 2)';
}
}
MAIN();
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