package main /** * * @param num int整型一维数组 * @return int整型二维数组 */ func permute(nums []int) [][]int { res := [][]int{} length := len(nums) if length == 0 { return res } path := []int{} used := make([]bool, length) dfs(nums, length, 0, &path, &used, &res) return res } func ...