java - 删除数组中的最后一个空格 - java

Question

我的程序必须以大写形式向后打印单词，并在每行末尾打印一个点。你能帮我删除点之前的最后一个空格吗？

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int pocet = sc.nextInt();
    sc.nextLine();
    for (int i = 0; i < pocet; i++) {
        String veta = sc.nextLine();
        String veta2=veta.replaceAll("\\s+"," ");
        String[] words = veta2.split(" "); 
        String result = "";
        for (int j = 0; j<words.length;j++){
            for (int k = words[j].length(); k > 0; k--) {
            result = result + words[j].substring(k - 1, k);

            }
        words[j] = result;
        result = "";
        //return result.replaceAll("\\s+$", "");
        }

        words[words.length-1]= words[words.length-1];

        System.out.println();

    for (int j =0; j<words.length; j++){
        char whitespace = ' ';
         System.out.print(words[j].toUpperCase()+whitespace);
     }
    }
    System.out.print(".");
    System.out.println();

  }    
}

谢谢

Answer 1

将您的 for 替换为以下代码:

for (int j =0; j<words.length; j++){
     char whitespace = ' ';
     System.out.print(words[j].toUpperCase());
     if (j < (words.length - 1)) {
         System.out.print(whitespace);
    }
}

这样，除了数组的最后一个单词之外，您将添加一个空格