Smallest power of 6 whose decimal expansion contains n: Difference between revisions
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=={{header|Ruby}}== |
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<syntaxhighlight lang="ruby">def smallest_6(n) |
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i = 1 |
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c = 0 |
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s = n.to_s |
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until i.to_s.match?(s) |
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c += 1 |
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i *= 6 |
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end |
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[n, c, i] |
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end |
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(0..21).each{|n| puts "%3d**%-3d: %d" % smallest_6(n) } |
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</syntaxhighlight> |
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{{out}} |
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<pre> 0**9 : 10077696 |
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1**0 : 1 |
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2**3 : 216 |
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3**2 : 36 |
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4**6 : 46656 |
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5**6 : 46656 |
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6**1 : 6 |
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7**5 : 7776 |
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8**12 : 2176782336 |
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9**4 : 1296 |
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10**9 : 10077696 |
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11**16 : 2821109907456 |
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12**4 : 1296 |
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13**13 : 13060694016 |
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14**28 : 6140942214464815497216 |
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15**18 : 101559956668416 |
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16**3 : 216 |
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17**10 : 60466176 |
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18**15 : 470184984576 |
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19**21 : 21936950640377856 |
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20**26 : 170581728179578208256 |
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21**3 : 216 |
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</pre> |
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=={{header|Wren}}== |
=={{header|Wren}}== |
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{{libheader|Wren-big}} |
{{libheader|Wren-big}} |
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