输入输出 简单写法 数据量不大： Scanner sc = new Scanner(System.in); int a = sc.nextInt(); char op = sc.nextLine().charAt(0); 如果比较大可以换： Scanner sc = new Scanner(new …
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Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/html/wp-content/themes/argon/functions.php on line 352