java - 如何在不使用 .split() 的情况下计算字符串中的每个单词？

Question

给定用户输入的字符串句子。将每个单词打印在单独的行上，并带有单词 #。例如，如果输入句子“The cat in the hat”，则输出如下

word #1: The
word #2: cat
word #3: in
word #4: the
word #5: hat

Scanner input = new Scanner (System.in);

String sentence;
String words = "";
int count = 1;

sentence = input.nextLine();


for (int i = 1; i < sentence.length(); i++)
{
  if (sentence.charAt(i) == ' ')
    count++;
}
{
  words = sentence.substring(0,sentence.indexOf(' '));
  System.out.println(words);
}

Answer 1

String s = "The cat in the hat";
Scanner scan = new Scanner(s);
int wordNum = 1;
while(scan.hasNext()){
    String temp = scan.next();
    System.out.println("word#" + wordNum + ": \t" + temp);
    wordNum++;
}

或

System.out.print("word#" + wordNum + ": \t" + temp + "\t");

如果你想让所有内容都在同一行