如何优化代码和代码优化理论

Question

我写了一个编码挑战。挑战的要求是颠倒句子中的特定单词=>仍然保持句子中单词的顺序但颠倒单词的字符。

输入样本是这样的：RemoteIo is awesome-Candiates pass interview-best candiates are selected。

以上输入的示例输出：

oIetomeR si emosewa 
setaidnaC ssap weivretni 
tseb setaidnac era detceles

如您所见，输入句子由 - 字符分隔，这意味着我们在上面的示例中有 3 个句子，句子只能包含字母字符和空格（两个单词之间有一个空格）

所以我的问题是如何优化下面的代码，并且有关于代码优化的任何理论/原则。我在Java中的代码实现：

public class Test1 {
    public static void main (String[] args) throws java.lang.Exception
    {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String input = br.readLine();
        
        // Put sentences to a String array.
        String[] data = input.split("-");
        
        // Loop throw sentence array
        for(int i = 0; i < data.length; i++) {
            
            // Put the words from the sentence to a String array.
            String[] words = data[i].split(" ");
            
            // Loop throw the word array
            for(int w = 0; w < words.length; w++) {
                
                // Revert the characters of each word
                for (int j = words[w].length() - 1;  j >=0; j--) {
                    if (j != 0) {
                        System.out.print(words[w].charAt(j));
                    } else {
                        System.out.print(words[w].charAt(j) + " ");
                    }
                }
                if ( w == words.length -1) {
                    System.out.println();
                }
            }
        }
    }
}

Answer 1

@爱德华彼得斯

代码优化与@Edward Peters 的评论

public class Test1 {
    public static void main (String[] args) throws java.lang.Exception
    {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String input = br.readLine();
        
        // Put sentences to a String array.
        String[] data = input.split("-");
        
        StringBuilder reverseBuilder = new StringBuilder();
        
        // Loop throw sentence array
        for(int i = 0; i < data.length; i++) {
            
            // Put the words from the sentence to a String array.
            String[] words = data[i].split(" ");
            
            // Loop throw the word array
            for(int w = 0; w < words.length; w++) {
                
                // Revert the characters of each word
                for (int j = words[w].length() - 1;  j >=0; j--) {
                    if (j != 0) {
                        reverseBuilder.append(words[w].charAt(j));
                        // System.out.print(words[w].charAt(j));
                    } else {
                        // System.out.print(words[w].charAt(j) + " ");
                        reverseBuilder.append(words[w].charAt(j));
                        reverseBuilder.append(' ');
                    }
                }
                if ( w == words.length -1) {
                    // System.out.println();
                    System.out.println(reverseBuilder);
                    reverseBuilder = new StringBuilder();
                }
            }
        }
    }
}