java - 数组中的元音数

Question

我正在尝试编写一个程序来声明和初始化一个字符数组(char[] word)并调用方法:

public static int countVowels(char[])

返回单词中元音的数量。

谁能告诉我哪里出错了？得到这个错误

java:11: error: char cannot be dereferenced
for (int j=0; j < word[i].length(); j++) { 
                         ^
array.java:12: error: char cannot be dereferenced
char c = word[i].charAt(j); 
                ^
2 errors

public class array { 
 public static void main(String[] args) { 
  char[] word = {'a','b','f','u','g','i','o','r'};

}
public static int countVowels(char[] word) {
int vowelCount = 0; 

for (int i = 0; i < word.length; i++) 
{ 
    for (int j=0; j < word[i].length(); j++) { 
    char c = word[i].charAt(j); 
    if ( (c == 'a') 
    || (c == 'e') 
    || (c == 'i') 
    || (c == 'o') 
    || (c == 'u') 
    || (c == 'A') 
    || (c == 'E') 
    || (c == 'I') 
    || (c == 'O') 
    || (c == 'U') 
    ) 
    vowelCount++; 
   } 
  } 
 } 
}

Answer 1

你真的不需要内循环。试试这个:

public class array { 
 public static void main(String[] args) { 
  char[] word = {'a','b','f','u','g','i','o','r'};

}
public static int countVowels(char[] word) {
int vowelCount = 0; 

for (int i = 0; i < word.length; i++) 
{ 
char c = word[i]; 
if ( (c == 'a') 
|| (c == 'e') 
|| (c == 'i') 
|| (c == 'o') 
|| (c == 'u') 
|| (c == 'A') 
|| (c == 'E') 
|| (c == 'I') 
|| (c == 'O') 
|| (c == 'U') 
) 
vowelCount++; 
  }
return vowelCount;
  } 
}