学习记录13

反转字符串
import java.util.Scanner;

public class ReverseString {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("请输入一个字符串: ");
String input = scanner.nextLine();

    String reversed = new StringBuilder(input).reverse().toString();
    System.out.println("反转后的字符串是: " + reversed);
    scanner.close();
}

}