一组数 在 另一组数里 的所有位置。
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假设有数组A和B
A是一组不重复的数,
B是一组有重复数的数组,里面包含A的部分元素
请问如何找到数组A元素在B数组里的所有位置?
我只会一个一个筛选,
for i = 1:length(A)
ind = find(B ==A(i))
end
然后把所有ind的值集合起来
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