tywbazft问问涯友颈肩痛怎么办？

How to calculate the cycles that change one permutation into another?

I\'m looking for an algorithm th开发者_如何学JAVAat given two permutations of a sequence (e.g. [2, 3, 1, 4] and [4, 1, 3, 2]) calculates the cycles that are needed to convert the first into the second