package main /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param target int整型 * @param nums int整型一维数组 * @return int整型二维数组 */ func combinationCount( target int , nums []int ) [][]int { // write code here res := make([][]int, 0) var dfs func(start int, tmpSum int, tmp []int) dfs = func(start int, tmpSum int, tmp []int) { if tmpSum == target { res = append(res, append([]int(nil), tmp...)) return } if tmpSum > target { return } for i := start; i < len(nums); i++ { tmp = append(tmp, nums[i]) dfs(i, tmpSum+nums[i], tmp) tmp = tmp[:len(tmp)-1] } } dfs(0, 0, []int{}) return res }