How to from I(x) to permutation and from permutation to I(x)

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hang dong 2019-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/463371-how-to-from-i-x-to-permutation-and-from-permutation-to-i-x

关闭： MATLAB Answer Bot 2021-8-20

I have the following table:

I Permutation

0 0 1 2 3

1 0 2 3 1

2 0 3 1 2

.......

22 3 2 0 1

23 3 2 1 0

How to from I(x) to permutation and from permutation to I(x)

Exam I(2) -> Per (0 3 1 2)

per(3 2 0 1) -> I(22)

help me!

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madhan ravi 2019-5-22

Sorry isn't https://in.mathworks.com/matlabcentral/answers/463295-case-of-two-mappings the same?

madhan ravi 2019-5-22

What are your inputs? and what is your desired output? Illustrate with an explicit example.

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James Tursa 2019-5-22

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https://ww2.mathworks.cn/matlabcentral/answers/463371-how-to-from-i-x-to-permutation-and-from-permutation-to-i-x#answer_376071

编辑：James Tursa 2019-5-22

在 MATLAB Online 中打开

E.g.,

>> Per
Per =
     0     1     2     3
     0     2     3     1
     0     3     1     2
     3     2     0     1
     3     2     1     0
>> p
p =
     0     3     1     2
>> x = find(ismember(Per,p,'rows'))
x =
     3
>> Per(x,:)
ans =
     0     3     1     2
>> q = [3 2 0 1]
q =
     3     2     0     1
>> x = find(ismember(Per,q,'rows'))
x =
     4
>> Per(x,:)
ans =
     3     2     0     1