Module:Math: Difference between revisions
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en>Primefac (fix typo) |
en>Primefac (implementing pseudo-TPER to add "median" - see Special:PermaLink/861908321#Module:Average) |
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| Line 219: | Line 219: | ||
if max_value then |
if max_value then |
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return max_value |
return max_value |
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end |
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end |
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--[[ |
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median |
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Find the median of set of numbers |
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Usage: |
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{{#invoke:Math | median | number1 | number2 | ...}} |
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OR |
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{{#invoke:Math | median }} |
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]] |
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function wrap.median(args) |
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return p._median(args) |
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end |
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function p._median(args) |
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local vals = {} |
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local count = 0 |
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for k,v in pairs(args) do |
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if v == string.match(v,'(%d+)') then |
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table.insert(vals,v) |
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count = count+1 |
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end |
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end |
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table.sort(vals,function(a,b) return tonumber(a) < tonumber(b) end) -- force number sort |
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if count/2 == math.ceil(count/2) then |
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return (vals[count/2] + vals[count/2+1])/2 |
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else |
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return vals[math.ceil(count/2)]; |
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end |
end |
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end |
end |
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