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How to say not equals to for 3 variables

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Avishka Karunaratne
评论： John D'Errico 2016-2-22
I want to set the condition in my if loop for which , if a is not equal to b and not equal to c then do ... how do i do this a ~= b ~= c does not work

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回答（2 个）

John D'Errico
John D'Errico 2016-2-22
编辑：John D'Errico 2016-2-22

How about:

a~=b && a~=c && b~=c

or...

numel(unique([a,b,c])) == 3

or many other ways.

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Stephen23
Stephen23 2016-2-22
@Avishka Karunaratne: correct.
@John D'Errico: +1 for the nice answer.
John D'Errico
John D'Errico 2016-2-22
Yes. The nice thing about using unique here is it makes the test easy, for any number of variables.

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Azzi Abdelmalek
Azzi Abdelmalek 2016-2-22
编辑：Azzi Abdelmalek 2016-2-22
a~=b & a~=c
%or you can use ismember function
~ismember(a,[b,c])
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John D'Errico
John D'Errico 2016-2-22
编辑：John D'Errico 2016-2-22
Read my answer as to how to do it. There I gave two ways of solving the problem that are NOT subject to failure.

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