swift下标

let Arr:[String] = [“a”,“b”,“c”,“d”,“e”,“f”,“g”]
let Brr:[String] = [“b”,“d”,“f”,“g”]
var Crr:[Int] = []

for i in 0…<Arr.count{

for j in 0..<Brr.count{
    
    if Arr[i]==Brr[j]{
        print(i)
        Crr.append(i)
    }
}

}

print(Crr)