package main
func (_ Solution) FirstDuplicateValue(array []int) int {
seenCheck := make( map[int]bool )
for _, v := range array {
if seenCheck[v] {
return v
}
seenCheck[v] = true
}
return -1
}
Buyerda nima qilishimiz kerak ?
sonlarni shunday qidirishimiz kerak 2-marta kelayotgan sonni qaytarishimiz kerak va birinchi ikkinchi marta kelayotgan sonni
masalan manabuyerda
[1,2,3,4,5,2,5] bolsa buyerda 5 emas 2 qaytadi chunki 2 birinchi yo'liqqan