Question

我在JAVA遇到麻烦。我试图让字符串向后打印每个单词。

示例：Hello World将是＆＃34; olleh dlrow＆＃34;

以下是我的课程。谢谢您的帮助。

public class ReadReverse {

    String message = "Hello nice to meet you in CS102";
    String[] myStrings = message.split(" ");  //Makes an array of the words split up by spaces
    String result = "";

    {
        // gets the length of the array and splits it up by each word
        for (int i = 0; i < myStrings[i].length(); i++) {
            message.push(myStrings[i].at(i));
            // sets th length to the length of the word
            int length = message.length();
        //          pops the letter out into the new stack 
            for (i = 0; i < length; i++) {
                result += myStrings;
            }
            // checks to see if it is at the end of the string. 
            if (i != message.length() - 1) {
                result += " ";
            }

        }
    }
}

Answer 1

您可以通过多种方式实现字符串反转。

看看这个：

 class ReverseString
    {
        public static void main(String[] args)
        {
            String input = "Hello world";
            String[] words = input.split(" ");
            String reversedString = "";
         for (int i = 0; i < words.length; i++)
        {
           String word = words[i]; 
           String reverseWord = "";
           for (int j = word.length()-1; j >= 0; j--) 
       {
            reverseWord = reverseWord + word.charAt(j);
       }
       reversedString = reversedString + reverseWord + " ";
    }
    System.out.println(input);
    System.out.println(reversedString);

    }

}

Answer 2

我会以这种方式逐字回复：

String input = "Hello world";
String[] words = input.split(" ");
StringBuilder reversed = new StringBuilder(        
for (String word : words) {
     reversed.append(new StringBuilder(word).reverse())
             .append(" ");
}
System.out.println(reversed);

或者以这种方式使用java 8流：

String input = "Hello world";
StringBuilder reversed = new StringBuilder();
Stream.of(input.split(" "))
      .map(StringBuilder::new)
      .map(StringBuilder::reverse)
      .forEach(word -> reversed.append(word).append(" "));
System.out.println(reversed);

输出：olleH dlrow

需要帮助在JAVA中反向打印单词

2 个答案: