Numbers in base 10 that are palindromic in bases 2, 4, and 16: Difference between revisions
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Found 22 numbers |
Found 22 numbers |
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done... |
done... |
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</pre> |
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=={{header|Ruby}}== |
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<syntaxhighlight lang="ruby">res = (0..25000).select do |n| |
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[2, 4, 16].all? do |base| |
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b = n.to_s(base) |
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b == b.reverse |
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end |
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end |
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puts res.join(" ")</syntaxhighlight> |
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{{out}} |
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<pre> |
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0 1 3 5 15 17 51 85 255 257 273 771 819 1285 1365 3855 4095 4097 4369 12291 13107 20485 21845 |
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</pre> |
</pre> |
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