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#!/usr/bin/env perl
# vim:set ts=4 sw=4 sts=4 et ai wm=0 nu:
#=============================================================================
# Copyright (c) 2024, Bob Lied
#=============================================================================
# ch-2.pl Perl Weekly Challenge 276 Task 2 Maximum Frequency
#=============================================================================
# You are given an array of positive integers, @ints.
# Write a script to return the total number of elements in the given
# array which have the highest frequency.
# Example 1 Input: @ints = (1, 2, 2, 4, 1, 5)
# Ouput: 4
# The maximum frequency is 2.
# The elements 1 and 2 have the maximum frequency.
# Example 2 Input: @ints = (1, 2, 3, 4, 5)
# Ouput: 5
# The maximum frequency is 1.
# The elements 1, 2, 3, 4 and 5 has the maximum frequency.
#=============================================================================
use v5.40;
use Getopt::Long;
my $Verbose = false;
my $DoTest = false;
my $Benchmark = 0;
GetOptions("test" => \$DoTest, "verbose" => \$Verbose, "benchmark:i" => \$Benchmark);
exit(!runTest()) if $DoTest;
exit( runBenchmark($Benchmark) ) if $Benchmark;
say maxFreq(@ARGV);
sub maxFreq(@ints)
{
use List::MoreUtils qw/frequency/;
use List::Util qw/max sum/;
my %freq = frequency @ints;
my $max = max values %freq;
return sum grep { $_ == $max } values %freq;
}
sub runTest
{
use Test2::V0;
is( maxFreq(1,2,2,4,1,5), 4, "Example 1");
is( maxFreq(1,2,3,4,5 ), 5, "Example 2");
done_testing;
}
sub runBenchmark($repeat)
{
use Benchmark qw/cmpthese/;
cmpthese($repeat, {
label => sub { },
});
}
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