DR
Size: a a a
DR
DR
SP
findIndexNumb(_ arr: [Int], _ target: Int) -> (Int, Int)? {
var numbDict = [Int:Int]()
for (i, value) in arr.enumerated() {
if let n = numbDict[value] {
return (i,n)
}else{
numbDict[target - value] = i
}
}
return nil
}IS
I
IS
A
IS
IS
NB
M
DH