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Ch-4-Prob-New-권의회
2279 days ago by matrix
Permutation([2,3,1,4,7,6,5]).inversions()
[[0, 2], [1, 2], [4, 5], [4, 6], [5, 6]]
[[0, 2], [1, 2], [4, 5], [4, 6], [5, 6]]
Permutation([2,3,1,4,7,6,5]).number_of_inversions()
5
5
Permutation([2,3,1,4,7,6,5]).is_even()
False
False