Find the missing permutation: Difference between revisions
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→{{header|Lua}}: typo fix |
→{{header|Lua}}: shortened |
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=={{header|Lua}}== |
=={{header|Lua}}== |
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Using the popular Penlight extension module - https://luarocks.org/modules/steved/penlight |
Using the popular Penlight extension module - https://luarocks.org/modules/steved/penlight |
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<lang Lua>local permute = require("pl.permute") |
<lang Lua>local permute, tablex = require("pl.permute"), require("pl.tablex") |
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function notIn (t, str) |
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for k, v in pairs(t) do |
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if v == str then return false end |
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end |
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return true |
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end |
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local permList, pStr = { |
local permList, pStr = { |
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"ABCD", "CABD", "ACDB", "DACB", "BCDA", "ACBD", "ADCB", "CDAB", |
"ABCD", "CABD", "ACDB", "DACB", "BCDA", "ACBD", "ADCB", "CDAB", |
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"DCBA", "BACD", "BADC", "BDAC", "CBDA", "DBCA", "DCAB" |
"DCBA", "BACD", "BADC", "BDAC", "CBDA", "DBCA", "DCAB" |
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} |
} |
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for |
for perm in permute.iter({"A","B","C","D"}) do |
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pStr = table.concat(perm) |
pStr = table.concat(perm) |
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if |
if not tablex.find(permList, pStr) then print(pStr) end |
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end</lang> |
end</lang> |
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{{out}} |
{{out}} |