For example, (2)(31) = 321 has two weak excedances (at index 1 and 2), whereas f(321) = 231 has one ascent (at index 1; that is, from 2 to 3). Permutations of totally ordered sets. In some applications, the elements of the set being permuted will be compared with each other.
1.1 permute(dims)
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For example, 1,1,2 have the following unique permutations: 1,1,2, 1,2,1, and 2,1,1. Java Solution 1 Based on Permutation, we can add a set to track if an element is duplicate and no need to swap.
The predicate permutation/2 is primarily intended to generate permutations. Note that a list of length N has N! Permutations, and unbounded permutation generation becomes prohibitively expensive, even for rather short lists (10!
将tensor的维度换位。
参数: - __dims__ (int .*) - 换位顺序
例:
1.2 permute(*dims) → Tensor
Permute the dimensions of this tensor.
Parameters: *dims (int..) – The desired ordering of dimensions