在matlab中比较和移动不同长度的字符串/数组 [英] comparison and shifting strings/arrays with different length in matlab

问题描述

我有一个不同长度或大小的字符串或数组的列表。我想使用最短的字符串，并与其他字符串进行比较，通过移动最短的字符串窗口一个接一个做比较。

I have a list of strings or arrays with different length or size. I want to use the shortest string and compare with other strings by shifting the shortest string window one by one to do comparison.

假设我想添加，我已将 [2 1 3] 作为我的最短名单， [4 5 7 8 9]

Let's say I want to do addition, I have [2 1 3] as my shortest list and want to perform addition on [4 5 7 8 9]

1st addition: [2 1 3] + [4 5 7]
2nd addition: [2 1 3] + [5 7 8]
3rd addition: [2 1 3] + [7 8 9]

感谢您使用matlab来实现这个功能。

How can i do this using matlab?

推荐答案

一个更简单的方法，如果你不关心速度是使用 arrayfun 和 cell2mat 。注意，这种方法不检查哪个向量是哪个。 a 必须短于 b 。

A simpler approach, if you don't care much about speed is using arrayfun and cell2mat. Note that this approach doesn't check which vector is which. a must be shorter than b.

a =
     1     2     3
b =
     1     3     5     2     4     6

c = cell2mat(arrayfun(@(n) a+b(n:n+numel(a)-1), 1:numel(b)-numel(a)+1,'UniformOutput',0).')
c =
     2     5     8
     4     7     5
     6     4     7
     3     6     9

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