字符串的所有可能组合MATLAB [英] All possible combinations of strings MATLAB

问题描述

UPD:我想对StackOverflow社区提出一个问题而不对自己动手解决问题表示抱歉.从现在开始，仅当我确实有严重问题时，我才会问问题

UPD: I wish to say sorry to the StackOverflow community for asking a question without making effort to solve the problem by myself. From now on, I'll ask questions only if I really have serious problem

我现在正在开发生成字符串元素所有可能排列的程序:

I am now developing the program that generates all the possible permutations of string elements:

我从开始:

A = ['Bridge','No Bridge'];
B = ['Asphalt','Concrete','Combined'];
C = ['Fly Ash',' Sulphur','Nothing'];
D = ['Two lanes','Four lanes with barriers'];
E = ['Paid','Non-paid'];
F = ['Mobile','Non-mobile'];
N = length(A)*length(B)*length(C)*length(D)*length(E)*length(F);
out = zeros(N,6);

但是现在我被下一步该怎么做了.所需的输出类似于:

But now I'm stuck with what to do next. The output needed is something like:

out = 

    'Bridge' 'Asphalt' 'Fly Ash' 'Two lanes' 'Paid' 'Mobile'
    'Bridge' 'Asphalt' 'Fly Ash' 'Two lanes' 'Paid' 'Non-mobile'
    'Bridge' 'Asphalt' 'Fly Ash' 'Two lanes' 'Non-paid' 'Mobile'
    'Bridge' 'Asphalt' 'Fly Ash' 'Two lanes' 'Non-paid' 'Non-mobile' etc

请，您能建议最有效的方法吗?

Please, could you suggest the most efficient way to do this?

推荐答案

首先，请注意，在Matlab中，以下方括号表示法:['Hello', 'World']，实际上并不创建字符串数组，而是将字符串"Hello"连接起来. "和世界"生成"HelloWorld".因此，在这种情况下，您应该使用单元格数组:(请注意大括号).

First, note that in Matlab, the following square bracket notation: ['Hello', 'World'], does not in fact create an array of string, but concatenates the strings "Hello" and "World" to yield 'HelloWorld'. So, in this case, you should use Cell Arrays instead: A = {'Hello', 'World'} (note the curly brackets).

要回答您的问题:
尽管您可以寻求更通用的东西(您应该在现实生活中的代码中使用)，但是现在，由于您知道手的数组，因此可以简单地创建嵌套的for这样的循环:

To answer your question:
Although you could go for something more generic (which you should in real-life code), for now, since you know the arrays of hand, you can simply create nested for loops like this:

A = {'Bridge','No Bridge'};
B = {'Asphalt','Concrete','Combined'};
...    
for aIndex = 1:length(A)
    for bIndex = 1:length(B)
        % add more loop levels here
        fprintf([A{aIndex}, ',', B{bIndex}, '\n']);
    end
end

有产出:

桥梁，沥青
混凝土桥
组合桥
无桥，沥青
无桥，混凝土
无桥组合

Bridge,Asphalt
Bridge,Concrete
Bridge,Combined
No Bridge,Asphalt
No Bridge,Concrete
No Bridge,Combined

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