基础练习 查找整数

import java.util.*;

public class Main {
    public static void main(String[] args) {
        int n,i,a;
        int flag = 0;
        Scanner scanner = new Scanner(System.in);
        n = scanner.nextInt();
        int[] b = new int[n];
        for(i = 0;i < n;i++) {
            b[i] = scanner.nextInt();
        }
        a = scanner.nextInt();
        for(i = 0;i< n;i++) {
            if(b[i]==a) {
                System.out.println(i+1);
                flag = 1;
                break;
            }
        }
        if(flag == 0){
            System.out.println(-1);
        }
    }
}