在MATLAB中使用乘法步骤进行循环 [英] For loop with multiplication step in MATLAB

问题描述

是否可以通过自定义步骤在MATLAB中使用for循环?我想做的是迭代比给定数字小2的所有幂.例如，C ++中的等效循环为:

Is there any way to use a for-loop in MATLAB with a custom step? What I want to do is iterate over all powers of 2 lesser than a given number. The equivalent loop in C++ (for example) would be:

for (int i = 1; i < 65; i *= 2)

注释1:这是最适合for循环的一种迭代，因此我不想使用while循环.
注意2:我实际上是在使用Octave，而不是MATLAB.

Note 1: This is the kind of iteration that best fits for-loops, so I'd like to not use while-loops.
Note 2: I'm actually using Octave, not MATLAB.

推荐答案

也许您想要一些与

for i=2.^[1:6]
   disp(i)
end

除非您需要弄清楚指数范围.这利用了以下事实: a_(i+1) = a_i*2可以重写为a_i = 2^i.

Except you will need to figure out the range of exponents. This uses the fact that since a_(i+1) = a_i*2 this can be rewritten as a_i = 2^i.

否则，您可以执行以下操作

Otherwise you could do something like the following

i=1;
while i<65
   i=i*2;
   disp(i);
end

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