How can I obtain another vector for a known vector, such that the elements of the new vector are the time that the element at the corresponding position in the known vector appears in it, without using loops?

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Sicheng Zhang 2017-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/374100-how-can-i-obtain-another-vector-for-a-known-vector-such-that-the-elements-of-the-new-vector-are-the

关闭： MATLAB Answer Bot 2021-8-20

For example, if A=[1 2 3 4 5 6], then B=[1 1 1 1 1 1]; if A=[1 1 2 2 3 3], then B=[1 2 1 2 1 2]; if A=[1 1 1 3 4 3], then B=[1 2 3 1 1 2]; ...and so on. I'd like to fulfil this without using loops.

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How can I obtain another vector for a known vector, such that the elements of the new vector are the time that the element at the corresponding position in the known vector appears in it, without using loops?

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How can I obtain another vector for a known vector, such that the elements of the new vector are the time that the element at the corresponding position in the known vector appears in it, without using loops?

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