Matlab比较不同大小的向量 [英] Matlab compare different sized vectors

问题描述

如果我有2个向量:A具有n个元素，B具有m个元素，且m< n

If I have 2 vectors: A with n elements and B with m elements and m < n,

如何在不使用for循环的情况下识别A中位于B中的所有元素?

how do I identify all the elements in A which are in B, without using a for loop?

非常感谢

推荐答案

C = intersect(A,B)将为您提供两者中的所有元素.

C = intersect(A,B) will give you all the elements which are in both.

还有ismember(A,B)，它将返回逻辑数组，指示A的每个成员是否也是B的成员.

There's also ismember(A,B), which will return a logical array indicating for each member of A whether it is also a member of B.

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