题解 | #字符串反转# 学习解题思路

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        // 读取输入
        String input = reader.readLine();

        // 将字符串转换为字符数组
        char[] inputArray = input.toCharArray();

        // 反转字符数组
        int left = 0;
        int right = inputArray.length - 1;
        while (left < right) {
            char temp = inputArray[left];
            inputArray[left] = inputArray[right];
            inputArray[right] = temp;
            left++;
            right--;
        }

        // 将字符数组转换为字符串
        String output = new String(inputArray);

        // 输出结果
        System.out.println(output);
    }
}