package 临时;
import java.util.Scanner;
public class Test8 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("请输入字符串:");
String str = scan.nextLine();
StringBuilder sb = new StringBuilder();
int index = 0;
char ch;
for (; index < str.length(); index++) {
ch = str.charAt(index);
if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
sb.append(ch);
}
}
System.out.println(sb.toString());
}
}