先获取set包
go get -u gopkg.in/fatih/set.v0
如下演示set并集，交集，差集的计算
package main
import (
"fmt"
"gopkg.in/fatih/set.v0"
)
/*set并集 交集 差集计算示例*/
func main() {
a := set.New(set.ThreadSafe)
a.Add(1)
a.Add(2)
a.Add(3)
b := set.New(set.ThreadSafe)
b.Add(2)
b.Add(3)
b.Add(4)
//并集
unionSet := set.Union(a, b)
fmt.Printf("并集:%v\n", unionSet)
//交集
intersectionSet := set.Intersection(a, b)
fmt.Printf("交集:%v\n", intersectionSet)
//差集
diffS1S2 := set.Difference(a, b)
fmt.Printf("差集(属a不属b):%v\n", diffS1S2)
diffS2S1 := set.Difference(b, a)
fmt.Printf("差集(属b不属a):%v\n", diffS2S1)
}
输出 :
并集:[4, 1, 2, 3]
交集:[2, 3]
差集(属a不属b):[1]
差集(属b不属a):[4]
