整数数组为二进制数组 [英] Integer array to binary array

问题描述

我有一个整数数组：

a=[3,4,5,6,7];

我想将它与每个四比特转换为二进制数组。对于上述整数数组我希望得到以下二进制数组：

I want to convert it to a binary array with four bits each. For the above integer array I would like get the following binary array:

abinary=[0,0,1,1, 0,1,0,0, 0,1,0,1, 0,1,1,0, 0,1,1,1];

有没有快速的方法来做到这一点？

Is there any fast way to do it?

推荐答案

Matlab具有内置功能的 DEC2BIN 。它创建了一个字符数组，但它很容易把这一回数字。

Matlab has the built-in function DEC2BIN. It creates a character array, but it's easy to turn that back to numbers.

%# create binary string - the 4 forces at least 4 bits
bstr = dec2bin([3,4,5,6,7],4)

%# convert back to numbers (reshape so that zeros are preserved)
out = str2num(reshape(bstr',[],1))'

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