func contain(target int, array []int) bool {
for _, item := range array {
if item == target {
return true
}
}
return false
}
func findDifference(nums1 []int, nums2 []int) [][]int {
var answer [][]int
answer = append(answer, []int{})
answer = append(answer, []int{})
for _, n := range nums1 {
if !contain(n, nums2) && !contain(n, answer[0]) {
answer[0] = append(answer[0], n)
}
}
for _, n := range nums2 {
if !contain(n, nums1) && !contain(n, answer[1]) {
answer[1] = append(answer[1], n)
}
}
return answer
}