/ *在单词中找到第一个元音并返回其位置 * */
public static int findFirstVowel (String word) {
int consonant = 0;
for(int count = 0; count < word.length(); count++){
word.toUpperCase();
char letter1 = word.charAt(count);
String letter2 = (Character.toString(letter1));
if (isVowel(letter2) == true){
//consonant = 0;
return (count);
}
}
return (-1);
}**
您的问题与word.touppercase()。由于字符串在Java中是不可变的,因此可以创建一个新的大写字符串,您不使用它。做您要做的事情的正确方法是:
public static int findFirstVowel (String word) {
int consonant = 0;
word = word.toUpperCase(); // you need to set word back to the uppercase version
for (int count = 0; count < word.length(); count++) {
char letter1 = word.charAt(count);
String letter2 = (Character.toString(letter1));
if (isVowel(letter2)) {
return count;
}
}
return -1;
}