Positive decimal integers with the digit 1 occurring exactly twice: Difference between revisions
Positive decimal integers with the digit 1 occurring exactly twice (view source)
Revision as of 00:48, 2 March 2023
, 1 year ago→{{header|Ruby}}: Add Ruby
(→{{header|Euler}}: Replace with generative, non-sorted version inspired by the Arturo, F# etc, samples) |
(→{{header|Ruby}}: Add Ruby) |
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</pre>
=={{header|Ruby}}==
<syntaxhighlight lang="ruby">p (1..1000).select{|n| n.digits.count(1) == 2}
</syntaxhighlight>
{{out}}
<pre>
[11, 101, 110, 112, 113, 114, 115, 116, 117, 118, 119, 121, 131, 141, 151, 161, 171, 181, 191, 211, 311, 411, 511, 611, 711, 811, 911]
</pre>
=={{header|Sidef}}==
<syntaxhighlight lang="ruby">say (1..1000 -> grep { .digits.count { _ == 1 } == 2 })</syntaxhighlight>
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