46.permutations.md

全排列

题目

思路

[0, 1, 2] [0, 2, 1] [2, 0, 1] [2, 1, 0] [1, 2, 0] [1, 0, 2]

[0, 1, 2] [0, 2, 1] [1, 0, 2] [1, 2, 0] [2, 0, 1] [2, 1, 0]

[0, 1, 2, 3] [0, 1, 3, 2] [0, 3, 1, 2] [3, 0, 1, 2] [3, 0, 2, 1] [3, 2, 0, 1] [2, 3, 0, 1] [2, 3, 1, 0] [2, 1, 3, 0] [1, 2, 3, 0] [1, 2, 0, 3] [1, 0, 2, 3]

[0, 1, 2, 3] [0, 1, 3, 2] [0, 2, 1, 3] [0, 2, 3, 1] [0, 3, 1, 2] [0, 3, 2, 1]

[1, 0, 2, 3] [1, 0, 3, 2] [1, 2, 0, 3] [1, 2, 3, 0] [1, 3, 0, 2] [1, 3, 2, 0]

[2, 0, 1, 3] [2, 0, 3, 1] [2, 1, 0, 3] [2, 1, 3, 0] [2, 3, 0, 1] [2, 3, 1, 0]

[3, 0, 1, 2] [3, 0, 2, 1] [3, 1, 0, 2] [3, 1, 2, 0] [3, 2, 0, 1] [3, 2, 1, 0]