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Go 输出两个slice切片的差集


go slice切片差集

func main() {
    leyangjun1 := []string{10,9,8}
    leyangjun2 := []string{4,5,6,7,8}

    retDiff := DifferenceSet(leyangjun1, leyangjun2)
    fmt.Println(retDiff)
}

func DifferenceSet(a []uint32, b []uint32) []uint32 {
	var c []uint32
	temp := map[uint32]struct{}{} 

	for _, val := range b {
		if _, ok := temp[val]; !ok {
			temp[val] = struct{}{} 
		}
	}

	for _, val := range a {
		if _, ok := temp[val]; !ok {
			c = append(c, val)
		}
	}

	return c
}

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