Simple maths problem.

*a _{n}* is defined as 1 + (1/

*S _{n}* is defined as

So we're gonna calculate *S _{15}*, and we're gonna use object-oriented programming because I'm me.

use v5.16; package Local::App { use Zydeco; use List::Util 'sum'; class Calc { method a ( PositiveInt $n ) = 1 + (1/$n); method S ( PositiveInt $n ) = sum( map $self->a($_), 1 .. $n ) +; } } my $calc = Local::App->new_calc; say $calc->S(15);

Or, using rational numbers:

use v5.16; package Local::App { use Zydeco; use List::Util 'sum'; class Calc { method r ( $n ) = 1/$n; method a ( PositiveInt $n ) = 1 + $self->r($n); method S ( PositiveInt $n ) = sum( map $self->a($_), 1 .. $n ) +; class +Rational { use Math::BigRat; method r ( $n ) = Math::BigRat->new("1/$n"); } } } my $calc = Local::App->new_calc_rational; say $calc->S(15);

Replies are listed 'Best First'. | |
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Re: Solving a maths problem with Perl
by tobyink (Canon) on Sep 03, 2020 at 11:30 UTC | |

Re: Solving a maths problem with Perl
by perlfan (Vicar) on Sep 30, 2020 at 19:08 UTC |

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