How to resolve the algorithm Tau number step by step in the Perl programming language

Published on 12 May 2024 09:40 PM
#Perl

How to resolve the algorithm Tau number step by step in the Perl programming language

Table of Contents

Problem Statement

A Tau number is a positive integer divisible by the count of its positive divisors.

Show the first   100   Tau numbers. The numbers shall be generated during run-time (i.e. the code may not contain string literals, sets/arrays of integers, or alike).

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Tau number step by step in the Perl programming language

Source code in the perl programming language

use strict;
use warnings;
use feature 'say';
use ntheory 'divisors';

my(@x,$n);

do { push(@x,$n) unless $n % scalar(divisors(++$n)) } until 100 == @x;

say "Tau numbers - first 100:\n" .
    ((sprintf "@{['%5d' x 100]}", @x[0..100-1]) =~ s/(.{80})/$1\n/gr);

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