Damm algorithm: Difference between revisions
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Alpha bravo (talk | contribs) (Added AutoHotkey) |
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112946 is valid |
112946 is valid |
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112949 is invalid</pre> |
112949 is invalid</pre> |
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=={{header|JavaScript}}== |
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<lang JavaScript>const table = [ |
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[0, 3, 1, 7, 5, 9, 8, 6, 4, 2], |
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[7, 0, 9, 2, 1, 5, 4, 8, 6, 3], |
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[4, 2, 0, 6, 8, 7, 1, 3, 5, 9], |
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[1, 7, 5, 0, 9, 8, 3, 4, 2, 6], |
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[6, 1, 2, 3, 0, 4, 5, 9, 7, 8], |
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[3, 6, 7, 4, 2, 0, 9, 5, 8, 1], |
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[5, 8, 6, 9, 7, 2, 0, 1, 3, 4], |
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[8, 9, 4, 5, 3, 6, 2, 0, 1, 7], |
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[9, 4, 3, 8, 6, 1, 7, 2, 0, 5], |
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[2, 5, 8, 1, 4, 3, 6, 7, 9, 0], |
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]; |
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const lookup = (p, c) => table[p][parseInt(c, 10)] |
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const damm = input => [...input].reduce(lookup, 0) === 0; |
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// ----------------------------------------------------------[ Tests ]---- |
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const test = () => ["5724", "5727", "112946", "112949"].forEach(e => |
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console.log(`${e} => ${damm(e) ? 'Pass' : 'Fail'}`) |
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); |
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test(); |
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</lang> |
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{{out}} |
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<pre> |
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5724 => Pass |
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5727 => Fail |
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112946 => Pass |
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112949 => Fail |
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</pre> |
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=={{header|Julia}}== |
=={{header|Julia}}== |