java - 反串码错误

Question

程序应该要求用户输入一个字符串，然后程序将其反转并显示它，但代码只返回第一个字母

import java.util.*;

public class ReverseString {

    public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    System.out.print("Enter a String: ");
    String s = scan.next();

        int x = s.length();

        char c = ' ';
        for(int i=x-1; i>=0;i--){
                c = s.charAt(i);
        }

            System.out.print("The reverse of String " + s + " is ");
            System.out.print(c);

    }
}

输出:

    Enter a String: Welcome
    The reverse of String Welcome is W

Answer 1

您在每次迭代中覆盖 c 的值，将其更改为字符串并添加到循环中

String c = "";
for(int i=x-1; i>=0;i--){
  c += s.charAt(i);
}