def subsets1(nums): res = [] nums.sort() def dfs(index, path): res.append(path) for i in range(index, len(nums)): dfs(i+1, path+[nums[i]]) dfs(0, []) return res
def subsets1(nums): res = [] nums.sort() def dfs(index, path): res.append(path) for i in range(index, len(nums)): dfs(i+1, path+[nums[i]]) dfs(0, []) return res