问题描述
我有一个(应用程序版本的)字符串数组,它们的排列顺序如下:
I have an array of strings (of an app's versions) randomly ordered like:
var arrayOfStrings = ["2.12.5", "2.12.10", "2.2", "2.11.8"]
已排序数组应为[ 2.2, 2.12.10, 2.12.5, 2.11.8](按最新顺序排列)。我正在尝试对它进行排序。
The sorted array should be ["2.2", "2.12.10", "2.12.5", "2.11.8"] (ordered by most recent). I am trying to sort it.
编辑:我不好,排序后的数组实际上应该是[ 2.12.10, 2.12.5, 2.11.8 , 2.2]。使用上面的解决方案。
My bad, the sorted array should actually be ["2.12.10", "2.12.5", "2.11.8", "2.2"]. Use the solution above.
//Compare by string
array.sortInPlace({ //This returns ["2.2", "2.12.5", "2.12.10", "2.11.8"]
$0 > $1
})
//Compare by int
array.sortInPlace({ //This returns ["2.12.10", "2.12.5", "2.11.8", "2.2"]
Int($0.stringByReplacingOccurrencesOfString(".", withString: "")) > Int($1.stringByReplacingOccurrencesOfString(".", withString: ""))
})
没有一个工作正常。返回正确数组的最佳方法是什么?
None of this is working properly. What is the best way to return the correct array?
推荐答案
最简单的选择是使用 compare
和 .NumericSearch
:
The easiest option is to use compare
with .NumericSearch
:
arrayOfStrings.sortInPlace { $0.compare($1, options: .NumericSearch) == .OrderedAscending }
很明显,如果您想要按降序排列,请使用 .OrderedDescending
。
Obviously, if you want it in descending order, use .OrderedDescending
.
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