17 lines
597 B
Julia
17 lines
597 B
Julia
function sprintfrange(a::Vector{T}) where T<:Integer
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isempty(a) && return ""
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len = length(a)
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dropme = falses(len)
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dropme[2:end-1] = Bool[a[i-1]==a[i]-1 && a[i+1]==a[i]+1 for i in 2:(len-1)]
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s = [dropme[i] ? "X" : string(a[i]) for i in 1:len]
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s = join(s, ",")
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replace(s, r",[,X]+," => "-")
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end
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testa = [ 0, 1, 2, 4, 6, 7, 8, 11, 12, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
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25, 27, 28, 29, 30, 31, 32, 33, 35, 36,
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37, 38, 39]
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println("Testing range-style formatting.")
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println(" ", testa, "\n =>\n ", sprintfrange(testa))
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