Linq检查字符串数组是否在其他数组中部分匹配 [英] Linq Check if array of string has a partial match in other array

问题描述

我想返回在array1中找到的匹配字符串

I want to return a string of matches found in the array1

public static string[] FindMatchs(string[] array1, string[] array2) {
    return array1.Where(x => array2.Contains(x)).ToArray();
}

输入:

var a1 = new string[] { "ca", "tr", "stack" };
var a2 = new string[] { "car", "house", "tree", "stackoverflow", "bus" };

该方法应返回"ca"，"tr"，堆栈"

the method should return "ca", "tr", "stack"

推荐答案

我在先前的代码中犯了一个错误. 请参见下面的工作示例.

I made a mistake in my previous code. Please see below for a working example.

您要结合使用.Contains()和.Any()来实现所需的功能.

You want to use a combination of .Contains() and .Any() to achieve what you are looking for.

这是一个基于您的代码的代码示例，应该可以正常工作(为清楚起见，签名中的名称已更改):

Here is a code example based on your code, that should work (names in signature has been changed for clarity):

public static string[] FindMatchs(string[] array, string[] filter) {
    return array.Where(x => filter.Any(y => x.Contains(y))).ToArray();
}

这是一个生动的例子: https://dotnetfiddle.net/HdB79V

Here is a live example of it: https://dotnetfiddle.net/HdB79V

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