我正在嘗試編寫一個 java 程序，該程序將計算聲明的句子中的單詞數，然后將句子分解為單詞，以便列出具有數值的單詞并顯示單詞。我已經解決了總數，但我似乎無法分解句子中的單詞然后按時間順序列出它們。我可以用字符做到這一點，但不能用文字。我已經探索了 Java Cookbook 和其他地方以找到解決方案，但我只是不太了解它。正如我所說，我可以讓字符計數，我可以計算單詞，但我不能讓單個單詞在單獨的行上打印，并在字符串中使用數值來表示它們的計數。public class MySentenceCounter { public static void main(String[] args) { String sentence = "This is my sentence and it is not great"; String[] wordArray = sentence.trim().split("\\s+"); int wordCount = wordArray.length; for (int i=0; i < sentence.length( ); i++) System.out.println("Char " + i + " is " + sentence.charAt(i)); //this produces the character count but I need it to form words, not individual characters. System.out.println("Total is " + wordCount + " words."); }}預期結果應如下所示：1 This2 is3 my4 sentence5 and6 it7 is8 not9 greatTotal is 9 words.
3 回答
繁星點點滴滴
TA貢獻1803條經驗 獲得超3個贊
迭代wordArray您創建的變量，而不是sentencefor 循環中的原始字符串：
public class MySentenceCounter {
public static void main(String[] args) {
String sentence = "This is my sentence and it is not great";
String[] wordArray = sentence.trim().split("\\s+");
// String[] wordArray = sentence.split(" "); This would work fine for your example sentence
int wordCount = wordArray.length;
for (int i = 0; i < wordCount; i++) {
int wordNumber = i + 1;
System.out.println(wordNumber + " " + wordArray[i]);
}
System.out.println("Total is " + wordCount + " words.");
}
}
輸出：
1 This
2 is
3 my
4 sentence
5 and
6 it
7 is
8 not
9 great
Total is 9 words.
飲歌長嘯
TA貢獻1951條經驗 獲得超3個贊
盡量避免過于復雜，下面的就行了
public class MySentenceCounter {
public static void main(String[] args) {
String sentence = "This is my sentence and it is not great";
int ctr = 0;
for (String str : sentence.trim().split("\\s+")) {
System.out.println(++ctr + "" + str) ;
}
System.out.println("Total is " + ctr + " words.");
}
}
qq_花開花謝_0
TA貢獻1835條經驗 獲得超7個贊
使用 IntStream 而不是 for 循環的更優雅的解決方案：
import java.util.stream.IntStream;
public class ExampleSolution
{
public static void main(String[] args)
{
String sentence = "This is my sentence and it is not great";
String[] splitted = sentence.split("\\s+");
IntStream.range(0, splitted.length)
.mapToObj(i -> (i + 1) + " " + splitted[i])
.forEach(System.out::println);
System.out.println("Total is " + splitted.length + " words.");
}
}
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