假设以下是我们的字符串。
String str = "!Demo Text!";
要计算元音,请遍历每个字符并检查是否有任何元音,即
if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') { ++vowelsCount; }
变量“ vowelsCount”将给出所有元音的计数。
public class Demo { public static void main(String[] args) { String str = "!Demo Text!"; int vowelsCount = 0; for(char c : str.toCharArray()) { c = Character.toLowerCase(c); if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') { ++vowelsCount; } } System.out.println("String "+str+" has "+ vowelsCount + " vowels."); } }
输出结果
String !Demo Text! has 3 vowels.