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September 2017 Update

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This commit is contained in:
Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
14570 changed files with 153136 additions and 63871 deletions
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47
Task/Range-extraction/Swift/range-extraction-1.swift
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@ -1,47 +0,0 @@
func rangesFromInts(ints:[Int]) -> [(Int, Int)] {
var range : (Int, Int)?
var ranges = [(Int, Int)]()
for this in ints {
if let (start, end) = range {
if this == end + 1 {
range = (start, this)
}
else {
ranges.append(range!)
range = (this, this)
}
}
else { range = (this, this) }
}
ranges.append(range!)
return ranges
}
func descriptionFromRanges(ranges:[(Int, Int)]) -> String {
var desc = ""
for (start, end) in ranges {
desc += desc.isEmpty ? "" : ","
if start == end {
desc += "\(start)"
}
else if end == start + 1 {
desc += "\(start),\(end)"
}
else {
desc += "\(start)-\(end)"
}
}
return desc
}
let ex = [-6, -3, -2, -1, 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20]
let longer = [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]
descriptionFromRanges(rangesFromInts(ex))
descriptionFromRanges(rangesFromInts(longer))

35
Task/Range-extraction/Swift/range-extraction-2.swift
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@ -1,35 +0,0 @@
extension NSIndexSet {
var rangesDescription : String {
var out = ""
indexSet.enumerateRangesUsingBlock { range, _ in
let start = range.location
let end = range.location+range.length-1
out += out.isEmpty ? "" : ","
if start == end {
out += "\(start)"
}
else if end == start + 1 {
out += "\(start),\(end)"
}
else {
out += "\(start)-\(end)"
}
}
return out
}
}
let ex = [-6, -3, -2, -1, 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20]
let longer = [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]
var indexSet = NSMutableIndexSet()
ex.map { indexSet.addIndex($0) }
indexSet.rangesDescription
var indexSet2 = NSMutableIndexSet()
longer.map { indexSet2.addIndex($0) }
indexSet2.rangesDescription

49
Task/Range-extraction/Swift/range-extraction.swift Normal file
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@ -0,0 +1,49 @@
import Darwin
func ranges(from ints:[Int]) -> [(Int, Int)] {
var range : (Int, Int)?
var ranges = [(Int, Int)]()
for this in ints {
if let (start, end) = range {
if this == end + 1 {
range = (start, this)
}
else {
ranges.append(range!)
range = (this, this)
}
}
else { range = (this, this) }
}
ranges.append(range!)
return ranges
}
func description(from ranges:[(Int, Int)]) -> String {
var desc = ""
for (start, end) in ranges {
desc += desc.isEmpty ? "" : ","
if start == end {
desc += "\(start)"
}
else if end == start + 1 {
desc += "\(start),\(end)"
}
else {
desc += "\(start)-\(end)"
}
}
return desc
}
let ex = [-6, -3, -2, -1, 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20]
let longer = [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(description(from: ranges(from: ex)))
print(description(from: ranges(from: longer)))