题解 | #字符逆序#

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
// StringBuilder sb = new StringBuilder();
while (sc.hasNext()){
String s = sc.nextLine();
char[] ch = s.toCharArray();
for(int i=ch.length-1; i>=0; i--){
System.out.print(ch[i]);
}
}
}

}