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#!/usr/bin/perl
# Perl Weekly Challenge - 116
# - https://perlweeklychallenge.org/blog/perl-weekly-challenge-116/#TASK2
#
# Task 2 - Sum of Squares
#
# Author: Niels 'PerlBoy' van Dijke
use v5.16;
use strict;
use warnings;
use List::Util qw(sum);
use Test::More;
# Prototype(s)
sub isSumOfSquares($);
sub isIntSqr($);
my %tests = (
34 => 1,
50 => 1,
52 => 0,
2021 => 1,
1234563 => 1,
);
foreach my $test (sort keys %tests) {
is(isSumOfSquares($test),$tests{$test});
}
done_testing;
sub isSumOfSquares($) {
my ($n) = @_;
return isIntSqr(sum(map{$_**2}split(//,$n)));
}
sub isIntSqr($) {
my ($i) = @_;
return ($i == int(sqrt $i)**2 ? 1 : 0);
}
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