零基础学JAVA，为什么括号出错了

import java.util.Scanner;
import java.util.Arrays;

public class Example {
    public static void main(String args[]) {
        int start = 0, end;
        int a[] = {12, 45, 67, 89, 123, -45, 67};
        int N = a.length;
        int minIndex = -1;
        for (int i = 0; i < N - 1; i++) {
            minIndex = i;
            for (int j = i + 1; j <= N - 1; j++) {
                if (a[j] < a[minIndex])
                    minIndex = j;
            }
            if (minIndex != i) {
                int temp = a[i];
                a[i] = a[minIndex];
                a[minIndex] = temp;
            }
            System.out.println(Arrays.toString(a));
        }
        Scanner scanner = new Scanner(System.in);
        System.out.println("输入一个整数，程序将判断该整数是否在数组中：");
        int number = scanner.nextInt();
        int count = 0;
        end = N;
        int middle = (start + end) / 2;
        while (number != a[middle]) {
            if (number > a[middle])
                start = middle;
            else if (number < a[middle])
                end = middle;
            middle = (start + end) / 2;
            count++;
            if (count > N / 2)
                break;
        }
        if (count > N / 2) {
            System.out.printf("%d 不在数组中。\n", number);
        } else {
            System.out.printf("%d 在数组中。\n", number);
        }
    }
}