2020CCPC网络选拔赛 1010 Reports

1010 Reports

题目大意：

给定一个0/1的整数数列，如果序列中存在相邻数字相同，输出YES，否则输出NO

Java代码：

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner read = new Scanner(System.in);
        int t = read.nextInt();
        while (t-- > 0) {
            int p = read.nextInt();
            int n = 0;
            int first = read.nextInt();
            while (--p > 0) {
                int second = read.nextInt();
                if (first == 1 && second == 1 || first == 0 && second == 0) {
                    n++;
                }
                first = second;
            }
            if (n == 0) {
                System.out.println("YES");
            } else {
                System.out.println("NO");
            }
        }
        read.close();
    }
}