Unique characters: Difference between revisions
Content added Content deleted
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for i=1, string.len(str) do |
for i=1, string.len(str) do |
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local char = string.sub(str,i,i) |
local char = string.sub(str,i,i) |
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map[char] = |
if map[char] == nil then |
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map[char] = true |
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else |
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map[char] = false |
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end |
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end |
end |
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local list = {} |
local list = {} |
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for char, bool in pairs (map) do |
for char, bool in pairs (map) do |
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if bool then |
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table.insert (list, char) |
table.insert (list, char) |
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end |
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end |
end |
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table.sort (list) |
table.sort (list) |
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print (unpack (list)) |
print (unpack (list)) |
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end |
end</lang> |
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| ⚫ | |||
</lang> |
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| ⚫ | |||
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1 2 3 5 a b c d e f |
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c d f g x y z |
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=={{header|Mathematica}}/{{header|Wolfram Language}}== |
=={{header|Mathematica}}/{{header|Wolfram Language}}== |
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