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Ingy döt Net 2023-07-01 11:58:00 -04:00
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commit cb5bb5e222
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Task/Range-extraction/BASIC256/range-extraction.basic Normal file
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arraybase 1
dim a = {-6, -3, -2, -1, 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20}
print formatRange(a)
print
dim b = {0, 1, 2, 4, 6, 7, 8, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39}
print formatRange(b)
end
function formatRange (a)
lb = a[?,]: ub = a[?]
if ub = - 1 then return ""
if lb = ub then return string(a[lb])
rangeCount = 1
range = string(a[lb])
for i = lb + 1 to ub
if a[i] = a[i - 1] + 1 then
rangeCount += 1
else
if rangeCount = 1 then
range += "," + string(a[i])
else
if rangeCount = 2 then
rangeCount = 1
range += "," + string(a[i-1]) + "," + string(a[i])
else
rangeCount = 1
range += "-" + string(a[i-1]) + "," + string(a[i])
end if
end if
end if
next
if rangeCount = 2 then
range += "," + string(a[ub])
else
if rangeCount > 2 then range += "-" + string(a[ub])
end if
return range
end function