350. 两个数组的交集 II

350. 两个数组的交集 II

package main
import "fmt"
func intersect(nums1 []int, nums2 []int) []int {
    m1 :=make(map[int]int)
    for _,v:=range nums1{
        m1[v]++
    }
    m2 :=make(map[int]int)
    for _,v:=range nums2{
        m2[v]++
    }
    var res[]int
    for k,v :=range m1{
        r := m2[k]
        r = min(v,r)
        for i:=0;i<r;i++{
            res =append(res,k)
        }
    }
    return res
}
func min(a,b int)int  {
    if a<b{
        return a
    }
    return b
}
func main() {
    fmt.Println(intersect([]int{1,2,2,1},[]int{2,2}))
    fmt.Println(intersect([]int{4,9,5},[]int{9,4,9,8,4}))
}