题解 | 单组_字符串

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
	  /**通过全部用例
            运行时间
            131ms
            占用内存
            15352KB */
        Scanner in = new Scanner(System.in);
        int len = in.nextInt();
        String str = in.next();        
        StringBuilder result = new StringBuilder(str);        
        System.out.println(result.reverse());
        in.close();
    }
    
    /**通过全部用例
        运行时间
        116ms
        占用内存
        16388KB
     */
    public static void m1() {
        Scanner in = new Scanner(System.in);
        int len = in.nextInt();
        String str = in.next();        
        //String result = "";
        StringBuilder result = new StringBuilder();
        while(len-- >0){
            //result += str.charAt(len);
            result.append(str.charAt(len));
        }
        System.out.println(result);
        in.close();
    }
}