nomor 1 pertemuan 3

package pertemuan3;
import java.util.Scanner;
public class nomor1{
    public static int index(int data[], int key){
        for(int i=0;i<data.length;i++){
            if(data[i] == key){
                return i;
            }
        }
        return -1;
    }
    public static void main(String[]args){
        int[] data= {12, 90, 77, 13, 36, 39, 9, 89, 99, 1, 30, 27};
        Scanner in = new Scanner(System.in);
        System.out.print("Data : ");
        for (int i = 0; i < data.length; i++){
            System.out.print(data[i]+" ");
        }
        System.out.print("\nMasukkan angka berapa yang ingin kamu cari : ");
        int key = in.nextInt();
        int result = index(data, key);
        if (result == -1)
            System.out.println("Angka tidak ditemukan");
        else
            System.out.println("Angka "+key+" ditemukan di index ke-"+index(data, key));
    }
}