求数组元素的全排列,数组不含重复元素
2017-02-05
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求数组元素的全排列,数组不含重复元素2015-02-15PermutationsGiven a collection of numbers, return all possible permutations.For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], and [3,2,1].求数组元素的全排列,数组不...