I have a rather simple question that I’m surprised I haven’t been able to figure out easily. Suppose I have two arrays, A=["A","C","B","C"], and B=["C","B","A","C"]. Treat A as the correct sorted order of the array. How do I find the permutation of array B such that the two arrays are equal. Assum…

Find permutation of an array such that it is equal to another array

pitsianis August 5, 2022, 7:21pm 4

B[sortperm(B)[invperm(sortperm(A))]]

i.e. sort array B and then follow backwords the sorting permutation of array A, to make B into A.

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