如何使用Array.sort通过特定元素对结构数组进行排序 [英] How to use Array.sort to sort an array of structs, by a specific element

问题描述

简单，我有一个像这样的结构:

Simple, I have a struct like this:

struct bla{
  string name;
  float depth;
}

我有一个bla数组，我想按深度排序，首先是最大深度. 代表应该做/返回什么?我找不到任何具体的例子.

I have an bla array, and I want to sort by depth, being the greatest depth first. What should the delegate do/return? I cant find any concrete example.

推荐答案

您可以使用

You can use the overload of Array.Sort which takes a Comparison<T>:

bla[] blas = new[] { 
    new bla() { name = "3", depth = 3 }, 
    new bla() { name = "4", depth = 4 }, 
    new bla() { name = "2", depth = 2 }, 
    new bla() { name = "1", depth = 1 }, 
};

Array.Sort<bla>(blas, (x,y) => x.depth.CompareTo(y.depth));

通过这种方式，您可以对原始数组进行排序，而不是创建新数组.

On this way you sort the original array instead of creating new one.

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