题目描述

双指针，理解题目思路

样例

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int m = scan.nextInt();
        int[] a = new int[n];
        int[] b = new int[m];
        for(int i = 0 ; i < n ; i ++ ) a[i] = scan.nextInt();
        for(int i = 0 ; i < m ; i ++ ) b[i] = scan.nextInt();

        int i = 0 , j = 0 ;
        while(i < n && j < m ){
            //有相同才i++ 否则j++
            if(a[i] == b[j]) i ++ ;
            j ++ ;
        }
        if(i == n) System.out.println("Yes");
        else System.out.println("No");
    }
}