java - 根据第一个单词的长度反转字符串

Question

我是 Java 字符串的新手。 其实我有反转单词的代码:

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

public class Test2 {

    public static void main(String[] args) throws IOException
    {
        System.out.println("enter a sentence");
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String rev =br.readLine();

        String [] bread = rev.split(" ");
        for(int z =bread.length-1;z>=0;z--)
        {
            System.out.println(bread[z]);
        }

    }
}

对于上面的代码，我得到:

Input :Bangalore is a city
Output: City is a Bangalore

但我希望输出如下所示:

Input: Bangalore is a city
Output:cityaisba ng a lore

另一个例子:

Input: Hello Iam New To Java.Java is object Oriented language.
Output: langu age Ori en tedo bjec ti sjava. javaToNe wIamolleH

请帮帮我

Answer 1

这是您可以做到的一种方法:

    String rev = br.readLine();

    String [] bread = rev.split(" ");
    int revCounter = 0;
    for(int z = bread.length - 1; z >= 0; z--)
    {
        String word = bread[z];
        for(int i = 0; i < word.length(); i++)
        {
            // If char at current position in 'rev' was a space then
            // just print space. Otherwise, print char from current word.
            if(rev.charAt(revCounter) == ' ')
            {
                System.out.print(' ');
                i--;
            }
            else
                System.out.print(word.charAt(i));

            revCounter++;
        }
    }