Camelia
Prev: Exercise: Print sum of numbers

Solution: Print sum of numbers

Note! This site is about Perl 6.
If you are looking for a solution for the current production version of Perl 5, please check out the Perl 5 tutorial.

tutorial/files/statistics.p6

#!/usr/bin/env perl6
use v6;

my $filename = 'examples/numbers.txt';

my $total;
my $count;
my $min;
my $max;

if (my $fh = open $filename, :r) {
    for $fh.lines -> $line {
        if (not $count) {
            $min = $max = $line;
        }
        $total += $line;
        if ($min > $line) {
            $min = $line;
        }
        if ($max < $line) {
            $max = $line;
        }
        $count++;
    }
    my $average = $total / $count;
    say "Total: $total, Count: $count Average: $average Min: $min Max: $max";
} else {
    say "Could not open '$filename'";
}

# There is a minor issue in this solution, what if there are no values at all in the file?


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Gabor Szabo
Written by Gabor Szabo

Published on 2012-01-01


Prev: Exercise: Print sum of numbers

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