Linq查询以比较2 List& lt; string& gt;用于不同的比赛 [英] Linq query to compare 2 List<string> for distinct matches

问题描述

我是Linq的新手，他到处都在搜索此内容，但是找不到答案，所以如果已经提出了借口.我正在寻找一个Linq查询(最好使用lambda/方法语法)来比较2个列表:

I'm new to Linq and have searched for this everywhere but could not find answer so excuse if already asked. I looking for a Linq query (ideally using the lambda/ method syntax) to compare 2 Lists:

IList<string> List1 = new List<string> { usr.User1, usr.User2, usr.User3, usr.User4 };

IList<string> List2 = new List<string>{ "Tim", "Bob", "Brian", "Paul" };

基本上，我希望只有4种可能的比赛，因此:

Basically I would like there to only be 4 possible matches, so if:

usr.User1 == "Tim", 
usr.User2 == "Bob", 
usr.User3 == "Brian", 
usr.User4 == "Paul"

理想情况下，我希望它返回一个0到4之间的整数，因此，如果以上所有匹配均成功，则它将返回4，如果没有匹配成功，则返回0，等等.非常感谢.

I would ideally like it to return an int with a value from 0-4, so if all of the matches above were successful then it would return 4, if no matches successful then returns 0 etc. Many thanks.

推荐答案

List1.Zip(List2, (item1, item2) => item1 == item2 ? 1 : 0).Sum();

Zip()中定义的函数将返回1或0，具体取决于字符串是否匹配，然后您只需对结果求和(Sum())即可.

The function defined in Zip() will return 1 or 0, depending on whether or not the strings match, then you simply Sum() the results.

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