如何从多个向量中找到共同元素? [英] How to find common elements from multiple vectors?

问题描述

谁能告诉我如何从多个向量中找到共同元素?

Can anyone tell me how to find the common elements from multiple vectors?

a <- c(1,3,5,7,9)
b <- c(3,6,8,9,10)
c <- c(2,3,4,5,7,9)

我想从上述向量(例如:3 和 9)中获取公共元素

I want to get the common elements from the above vectors (ex: 3 and 9)

推荐答案

可能有更聪明的方法来解决这个问题，但是

There might be a cleverer way to go about this, but

intersect(intersect(a,b),c)

将完成这项工作.

如果你有很多论点，更聪明，更方便:

More cleverly, and more conveniently if you have a lot of arguments:

Reduce(intersect, list(a,b,c))

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