Riordan numbers: Difference between revisions
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Thundergnat (talk | contribs) (New draft task and Raku entry) |
Thundergnat (talk | contribs) m (→{{header|Raku}}: typos, extend stretch) |
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* Find and display the '''digit count''' of the |
* Find and display the '''digit count''' of the 1,000th Riordan number. |
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* Find and display the '''digit count''' of the 10,000th Riordan number. |
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my $upto = 32; |
my $upto = 32; |
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say "First {$upto.&cardinal} Riordan numbers:\n" ~ @riordan[^$upto]».&comma».fmt("%17s").batch(4).join("\n") ~ "\n"; |
say "First {$upto.&cardinal} Riordan numbers:\n" ~ @riordan[^$upto]».&comma».fmt("%17s").batch(4).join("\n") ~ "\n"; |
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say "The 1000th has {@riordan[9999].chars} digits"; |
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sub abr ($_) { .chars < 41 ?? $_ !! .substr(0,20) ~ '..' ~ .substr(*-20) ~ " ({.chars} digits)" } |
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</lang> |
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say "The {.Int.&ordinal}: " ~ abr @riordan[$_ - 1] for 1e3, 1e4</lang> |
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{{out}} |
{{out}} |
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<pre>First thirty-two Riordan numbers: |
<pre>First thirty-two Riordan numbers: |
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54,022,715,451 154,000,562,758 439,742,222,071 1,257,643,249,140 |
54,022,715,451 154,000,562,758 439,742,222,071 1,257,643,249,140 |
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The one thousandth: 51077756867821111314..79942013897484633052 (472 digits) |
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The 1000th has 4765 digits</pre> |
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The ten thousandth: 19927418577260688844..71395322020211157137 (4765 digits)</pre> |
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