數組不會使用小句子

Question

如果我將文本更改爲兩個單詞，程序將不會輸出任何內容。不知道如何解決這個問題，提前感謝。

public class test { 
public static void main(String args[]) { 
    String text = "The cat sat on the mat!"; //Change the string to "Hello there!" 
    int wordLengthCount [] = new int [20]; 
    String wordCountText = ""; 

    String sentence[] = text.split("[,\\-:\\?\\!\\ ]"); 

    for (int i = 0; i < sentence.length; i++) 
    { 
     wordLengthCount[sentence[i].length()]++; 
    } 

    for(int wordLength=0; wordLength<sentence.length; wordLength++) 
    { 
     if (wordLengthCount[wordLength] != 0){ 
      wordCountText += wordLengthCount[wordLength] + " with length of " + wordLength + "\n"; 
     } 
    } 
    System.out.println(wordCountText); 
} 
} 

Answer 1

你需要遍歷所有wordLengthCount

快速修復：

for (int wordLength = 0; wordLength < wordLengthCount.length; wordLength++) { 
    if (wordLengthCount[wordLength] != 0) { 
     wordCountText += wordLengthCount[wordLength] + " with length of " + wordLength + "\n"; 
    } 
} 

Live demo