列表<字符串>复杂排序 [英] List&lt;string&gt; complex sorting

问题描述

我有一个List尺码，比如XS、S、M、L、XL、XXL、UK 10、UK 12等

I have a List<string> of sizes, say XS, S, M, L, XL, XXL, UK 10, UK 12 etc

我想要的是强制顺序为上面的顺序，无论列表中项目的顺序如何，我想我需要一个 IComparable 运算符但不确定.

What I want is to force the order to be that of above, regardless of the order of items in the list, I think I need a IComparable operator but unsure.

理想情况下，我想要另一个具有正确顺序的列表，它可以引用它在列表中的位置"并重新排序，如果它不存在，它将默认为 A-Z

Ideally I want to have another List with the correct order in which it can reference it's 'place' in the list and re-sort itself, if it doesn't exist it will default to A-Z

推荐答案

按照您希望的尺寸顺序创建一个尺寸数组，然后根据衬衫尺寸在该数组中的位置对衬衫进行排序:

Create an array of sizes in the order you want them to be in, then sort the shirts by the position of their sizes in that array:

string[] sizes = new [] {"XS", "S", "M", "L", "XL", "XXL", "UK 10", "UK 12"};

var shirtsInOrder = shirts
                        .OrderBy(s=>sizes.Contains(s) ? "0" : "1")  // put unmatched sizes at the end
                        .ThenBy(s=>Array.IndexOf(sizes,s))  // sort matches by size
                        .ThenBy(s=>s); // sort rest A-Z

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