Range modifications: Difference between revisions
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m (sort input) |
m (parse reversed ranges) |
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=={{header|Julia}}== |
=={{header|Julia}}== |
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Julia has iterator classes called a type of Range, such as integer UnitRanges, that are like the "10-10" of the task but are stated as 10:10, with a colon not a minus sign. This implementation uses Julia's UnitRange class internally. |
Julia has iterator classes called a type of Range, such as integer UnitRanges, that are like the "10-10" of the task but are stated as 10:10, with a colon not a minus sign. This implementation uses Julia's UnitRange class internally. |
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<lang julia>import Base. |
<lang julia>import Base.parse, Base.print, Base.reduce |
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const RangeSequence = Array{UnitRange, 1} |
const RangeSequence = Array{UnitRange, 1} |
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startstop = split(e, r"\:|\-") |
startstop = split(e, r"\:|\-") |
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if length(startstop) == 2 |
if length(startstop) == 2 |
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start = tryparse(Int, startstop[1]) |
start, stop = tryparse(Int, startstop[1]), tryparse(Int, startstop[2]) |
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stop = |
start, stop = start <= stop ? (start, stop) : (stop, start) |
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start != nothing && stop != nothing && combine!(seq, start:stop) |
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combine!(seq, start:stop) |
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end |
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elseif (n = tryparse(Int, startstop[1])) != nothing |
elseif (n = tryparse(Int, startstop[1])) != nothing |
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combine!(seq, n:n) |
combine!(seq, n:n) |
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else |
else |
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newseq = vcat(combine!(seq[1:pos], n:n), seq[pos+1:end]) |
newseq = vcat(combine!(seq[1:pos], n:n), seq[pos+1:end]) |
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empty!(seq) |
append!(empty!(seq), newseq) |
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append!(seq, newseq) |
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end |
end |
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return seq |
return seq |
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end |
end |
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reduce( |
reduce(a::RangeSequence) = begin seq = UnitRange[]; for r in a combine!(seq, r) end; seq end |
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function removeinteger!(seq, n::Integer) |
function removeinteger!(seq, n::Integer) |
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println("Parse \"10-25, 1-5, 27-30\" => ", parse(RangeSequence, "10-25, 1-5, 27-30")) |
println("Parse \"10-25, 1-5, 27-30\" => ", parse(RangeSequence, "10-25, 1-5, 27-30")) |
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println("Parse \"1-3,5-15,25-10,27-30\" => ", parse(RangeSequence, "1-3,5-15,25-10,27-30")) |
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</lang>{{out}} |
</lang>{{out}} |
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<pre> |
<pre> |
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Parse "10-25, 1-5, 27-30" => 1-5,10-25,27-30 |
Parse "10-25, 1-5, 27-30" => 1-5,10-25,27-30 |
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Parse "1-3,5-15,25-10,27-30" => 1-3,10-25,27-30 |
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</pre> |
</pre> |
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